10 Best Things about building your own house (no particular order).
1. You get it your way.
2. You have plenty to do for a year or two.
3. You learn tons about the construction business, woodworking, and other crafts.
4. You get connected to a whole different culture than you normally would (for us).
5. You get an enormous amount of pride from having built a house, with your hands
6. You meet a lot of interesting people, many who become true friends.
7. If done right, you get way more (+25%) for the same price as buying.
8. You know exactly how everything was done and where things are (plumbing, etc).
9. It can be a hell of a lot of fun, challenging, and rewarding.
10. You can find any room in your sleep, even if its pitch black & even on the first night there.
10 Worst Things about building your own house (no particular order).

2. You can kiss off a vacation for a year or two.
3. Expect a lot of discussions (some heated) with your building partner.
4. Even though you think you can have it your way, you can't. Compromise is the best you'll do.
5. Expect some sleepless nights as you worry whether something was done right, or at all.
6. Even though friends say they'll be there to help, you're on your own. The best help is hired.
7. Expect to get hurt, injured, or maimed. If not, you've been really lucky.
8. You know exactly where every booboo is in your house.
9. Whenever someone says they built their house, you doubt it (or ask for endless details).
10. You can sleep in your car, but you can't drive your house (that would be an RV).