I have been dating my girlfriend for about 15 months and I am still unsure about whether I will marry her. She has told me more than once that she wants to marry me and I sincerely believe that she loves me for the right reasons. I love her too and I want her to be happy. The problem is that I can see marriage interfering with how I want to spend my time. I'm a geek and I really enjoy learning and making software. I like contributing software to open-source projects and I have spent the past 6 months volunteering a lot of my free time to collaborate with some students on a computational-biology project...eventually I could see my career moving more in that area so my "hobby" of learning and writing software is related to my career path and I see it as professional development...and I ultimately believe that I am called to write software that will benefit other people...that's why I'm specifically interested in the biological application. Anyhow, I am unsure about getting married because I am worried that I won't be able to reach my full potential professionally. Unfortunately, our interests are a bit different and there are other things she would rather be doing that writing software with me. In fact, a lot of the time we spend together, I'd rather be doing something else, not all the time and I do enjoy many of the activities we do together, but I do enjoy working a lot more than she does. This has prompted me to ponder whether I am actually the right person to marry. I don't have a strong desire to have children anytime soon...but on the other hand, I don't want to be 58 and regret being alone later in life. I think I'm fine living by myself now and don't feel in any rush to have children, I just don't want to possibly regret not having that later in life. (I come from a large family with 3 sisters and 2 brothers so I could see myself wanting at least some immediate family later.) I'd keep dating, but I know that she wants me to come to a decision soon...she's not trying to pressure me to marry her, but she is 27 and really wants to have a family of her own. She's very sweet, attractive both in personality and looks. I'm very lucky to have her. I just don't want to make the wrong decision. I know a lot of people will say, when it comes to marriage, you should just know...others will say it just takes time. But I am a person who does have a tough time making big decisions. Even with smaller decisions, I tend to over-analyze a lot. Considering the risks that come with marriage, the consequences if it does not work out, and opportunity costs, I don't know if it would ever be an easy decision. Yes, I have been praying about the decision. How do I know what I should do?