I don't. Everybody has problems. By comparison, I have very few; I don't have any diseases, ailments, or disabilities. I was not abused, traumatized, or part of a dysfunctional family. I don't have any addictions or drug habits, and the only medication I take is a multivitamin. My problem is my financial and living situation - hers is her health and mental outlook. I don't expect anyone to be perfect.
I have a friend who asked me a similar question. He knows I get around a lot and asked me why, instead of going for hot girls, I don't go for girls with great personalities. He's married, so here was my response to him: "If you could have your wife's personality in the body of Jessica Alba or the body of Rosie O'Donnell, which would you choose?" He couldn't answer my question because he didn't want to prove my point. That point is that I meet women I'm attracted to, then keep them around if I like them on the back-end - I'm not hunting for girls I'm not attracted to in the hopes that because they're not attractive they must have a great personality.
I met this girl my senior year of college while she was a sophomore or junior; I can't remember. We met during the last half of my senior year, so we didn't get a lot of time together in school, but we kept seeing each other afterward because we were having a good time and decided that despite the distance and the fact that she was still in school that we could make it work. For context, she transferred back home to attend a school in New York, so it was a 4-hour drive any time I wanted to see her, so that was usually a once-monthly thing.
The way that ended left a bit of a scar wherein I don't ever fully trust women, further reinforced by my BPD ex. I was feeling depressed for a few months because I didn't know the truth and blamed myself; I should have been there, I should be there now, etc. A mutual friend who followed her on socials found out that was a lie and told me - I didn't know because I was blocked on everything after that. One random night in March at like 3 AM, she texts me to confess, probably assuming I wouldn't be awake. I told her I knew everything, cursed her out, blocked her, and haven't spoken to or seen her since.
Not every woman has all the problems of this girl and my BPD ex. My second serious relationship was quite nice. She was a wonderful girl, super sweet. The only reason that didn't work out was because she wanted to go wherever I went and end up married together. I was maybe 23 or 24 at this point and wasn't nearly ready for that commitment, so when I found out that's where her head was at, I felt like I needed to end it so she could meet somebody who wanted the same things she did. And that's what happened - she's married now and still on good terms with me. Sometimes, she even catches up with my mom over the phone.
What ego? Probably half of this thread is me acknowledging and admitting that I'm wrong for wanting to do the things I listed here.