Wow. Thank you for all the thoughtful replies. I thought I would just get flamed.
I'll try to address some things different people said.
I am pretty sure I want to get married and have kids at some point. I just know now is not a great time since I have a lot of other things going on and am still young and advancing myself. I do not see myself continuing this lifestyle indefinitely. I am an avid hiker, have had my successes in running, earned solid degrees, backpacked abroad... It really has been great and still is great, but I definitely understand Christopher McCandless' last words to be true: "Happiness only real when shared." All these things I'm doing are still awesome, but they are slowly becoming less and less enjoyable because I have no one to share them with. I continue to do them because I can, and I feel that it is almost a duty to myself and to others down the road to have these experiences as they do make me a more interesting, thoughtful, and better person.
As far as the American Psycho parallels, I'm definitely not like that at all. I exercise and am in good shape, but it's not obsessive at all, and I will almost always cancel the gym if I'm invited to spend time with someone doing something I know I will enjoy. I also am not cutthroat with my jobat all. I'm just still at the beginning of my career and am trying to make a name for myself. That's important when you're starting out.
There's not really anyone to date around here because I live in a college town, so most girls are 18-23, and I'm still too young to date "doctors and lawyers," and in my experience, those types don't like me anyway because of how competitive and egotistical they are. That has been my experience with PhD students and law students anyway. I have excelled in a lot of different areas of life and appear to have it made from the outside, so a lot of these types freak out when they feel they're outshined. I was actually kind of excommunicated from a social circle of PhD students I was a part of because I was smarter than all of them (PhD students hate people smarter than them who aren't in academia) and was getting to do all kinds of things they weren't (making good money, traveling the world, reading interesting books rather than boring papers, not dealing with crappy advisors, having good job prospects, etc).
I don't know... The plan is to work this job another two years, make more money, keep investing, travel the world, go to grad school, then start prioritizing relationships after that. I'll be about 32 or 33 then. I feel very confident in that plan. It just sometimes feels like I'm the only person living this lifestyle sometimes. I appreciate the responses. Thanks.