I agree, don't make a commitment just because of your family- I doubt you will get truly saved if that's your motive.
I don't want to frighten you, but it is in your best interests that I warn you- even if you don't die, you CAN blow it before you die! If the Holy Spirit is calling you, it is a very dangerous thing, to persist in resisting his call. You can resist God to a point, where he gives up on you and declares that you will never enter his rest- that is when a person commits the unpardonable sin and becomes eternally condemned.
I do understand you totally though- I felt exactly the same as you- my family and most of my friends, inc my best friend were not Christians and I didn't want things to change with them, so I too delayed accepting Christ.
What you have to remember is that once you become a Christian you can enjoy every pleasure of life there is providing you enjoy it in a way that is righteous and holy in God's sight!
I have been a Christian for 5 years- look what I get up to!
Cinema- most films providing not too violent/ or explicit
Bars- yes I drink- (just don't get drunk) but enjoy myself just as much.
Going out with friends- there's nowhere my friends go that I can't go now that I am a Christian!
Clubbing- yes sometimes 49,999 people and I ! Love the music, have a couple of drinks etc and thoroughly enjoy myself with my mates- and neither I nor any of my friends get drunk or take drugs!
TV/Radio- I still watch and listen to most things- as long as it is not full of bad language, violent or explicit.
Have fun with people of the opposite sex- o.k. there are limits here, but I enjoy myself spending time with girls probably as much as anyone else. I enjoy their company and friendship.
As a Christian you can still go out with, hold hands, cuddle and kiss someone in the opposite sex (as long as they too are a Christian), the rest obviously you have to wait til marriage, but so what?- as long as you do it righteously there really is nothing you can't do!
Plus on top of this you can have all this fun and you don't get that terrible emptyness afterwards- you are often just as happy (not saying it is all a bed of roses because it isn't!)when you're not having fun as you are when you are!
And I can testify to this, when you become a Christian, God doesn't take away all the good things about your character and personality- He gave them to you! God is only interested in changing the bad stuff about you if you'll let him!
If you know any Christians, that are very serious and solemn and don't like having fun- that is their choice, God didn't make them like that! He certainly hasn't done that to me!