Girls, should I ask her why she likes (or is interested in) me?

Met someone online (she messaged me first), and in person, and she seems to still like me lol, but I'm really curious as to why and what interested her. Is it ok to ask (will it make me look bad in any way)? My self esteem isn't the highest in general, however it's not so much that as it just makes me wonder because I'm older (by 10 years), overweight, I mean, regardless I think I'm decent looking enough, but she's quite attractive and I'm sure could get a younger, fit guy with no problem. I know looks aren't everything, I'm just curious though. And long term goals are marriage and children, and it's not mine, especially children which I stated in my profile, so to me that would turn her away right there, but it hasn't.
Girls, should I ask her why she likes (or is interested in) me?
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