I don't think it's a good idea to try to date someone you are not attracted to, that much I agree with. What I am saying is that you should reflect on what traits you find attractive and why. That may give you insights into your preferences and possibly shift them to preferences that are realistic for you.

Most people will need to adjust their preferences throughout their lives. Age is a factor that makes shifting our preferences crucial to maintaining a healthy relationship with our partners. Regardless of whether you get married or not, you will not be able to attract the same women at 60 that you could in your 30's. Unfortunate as it is, it's inevitable and universal.