Well, Oh My Heck, as my good Mormon friends would say. Listen, bub, not all people are the same. We, who have some years on you, are not mindless when we say things like "18 or 21 is too young."
Anyone who is 18 or even 21 has not had a chance to experience life on their own for a significant amount of time. Is this important? Sure it is. Why? Because it is best to know who the heck you are ALONE and with GOD before you're even close to being ready for a committed relationship which you pray will be for life.
What have you, in general, at Age 18 or 21, done that's been significant to experience life and the world? Anything? How about a college education? Perhaps you don't need one... some don't and they're lucky. Some don't even know if they're ready for college until they're 25!!!!!!!! Are they any more mindless than you or your average 10 year old? No. They've needed to time to grow as a human being, not just as a Christian, but as a person as a whole. These things take time. If one rushes into marriage at such a young age two things are potentially very dangerous about that: A) You never get a chance to know who YOU are as your very own individual person. B) You may not be ready EVEN IF YOU THINK YOU ARE. Listen, between 97 and 98% of all 18-21 year olds think they know EVERYTHING!!! I did. I knew everything then that I needed to know and nobody could tell me I was wrong 'cause I wasn't and nobody could tell me I needed to grow up and experience life 'cause I was as mature as anyone in the world. I was untouchable, I was invinsible... and I was like most every other 18-21 year old - i was a fool. Looking back on those years they were some of the best of my life but I knew not a darn thing. I had relationships and i LEARNED from them!!! Man, i tell ya, when you've been in love and had your heart crushed a few times you really learn a thing or two, especially about the female persuasion of the species. When you have time to experience the world and much of what it has to offer you also learn. You cannot do that married. You should not be needing someone at such a young age. It is approximately 99.9% true that you need to exist all on your own... and hey, check this out - you NEED to be content in it. If I was so inclined, as you were so kind to say, I'd say screw your talk about being ready at 18 'cause if i was a bettin' man I'd lay down W's national debt that you are simply not ready at all. I'm not sayin' your not and i KNOW some people will want to read into what I say, maybe you are a rare exception, PetraFan... but if i was gonna place a bet I'd bet against you, no offense... my reasoning is what I've said - most KIDS that age are indeed still kids in MANY ways, grown up they may be in other ways, but true maturity takes time. Take the advice, Petra and Harpuia: live for awhile. Have PATIENCE. Sit down with God alone and just live and grow in Christ as he wishes for you to do. You may say you've done that. You haven't enough. "You don't know me," you might fire back. I don't... but I do. By 18-21 you're simply just not where you should be IF you're so needy. Most men by 25 or so are just about ready for that one woman to settle down with. Exceptions are rare.
Harpuia - you are needy. You need Christ alone in your life and you NEED to be content with being single. Want the Scripture to back it up, just ask! I fear deep down there is some severe need for attention in your life, some deep down desire to be loved so badly. If that's the case then I am sorry for whatever brought you to that. If I am mistaken then still you've truly got to Love Yourself, man. Walk upright like a noble man who is HAPPY to say "I am single and I am growing in my knowledge and my love for Christ each and every day I am alive. I will be patient and in the meantime I will be a shining example of what a godly single young man should be." If you cannot wake up in the morning content with yourself being single then you are not ready for that special someone to walk in your life just yet. That's cold, hard fact, mister. There's no murmuring allowed in this here game we call life or else ya ain't gonna get yourself anywhere positive, you just gonna wander that desert for awhile and if you keep complainin' you'll just keep wanderin'.
You need to go talk to someone, a youth minister, a pastor, someone you can confide in, someone who will pray with you and guide you towards where you wanna be. You're in a bad place, my friend; you're not even close to being capable of having someone in your life other than Christ. Man, I'm gonna pray for you right now, bro, alright? I care about you and I care about all who are not happy in where they are and you're not... but you really could be and you should be.