Yes, your title sure got my interest. And you have some valid points in your OP. I have learned to wait until a steady relationship based on shared interests, ideas, thoughts, and goals is established. I agree that basic religious belief compatibility is also a must.
However, we are from different generations when it comes to the moral values. And since I don't plan at this point to get married legally again but would like a long term partner, if I waited for marriage now, sex would never happen within that relationship. Or might never happen, for I'm not saying I'd never marry again, only that I don't plan to do so. (I've learned never to say never.)
But yes, with someone new, I do consider what I can give them just as much as I do what they offer me. And could care less of money, but do find chemistry to be just as important as any other part of the relationship, for without it all I have is a great friend and companion, not a relationship partner. Sex, to me, is just as important a part of a good relationship as the rest of it. So, yes, I think it's important before there's a really strong commitment to make sure that the compatibility extends into the bedroom as well.
Very good post, and it should be an interesting thread.