We did that with the first three homes we owned. Took two of them to the studs and did all the work besides HVAC ourselves. Made a killing on each of them. Kept buying bigger and better each time. But, its a young persons game. Today, I dont think I could stand the long nights and weekends of being a carpenter/drywaller/plumber/electrician on top of having a regular job. Also, living in a mess for years at a time can take its toll, especially with little ones. But, there is no greater satisfaction than enjoying the final product and knowing you did it on your own. Looking back, I certainly don't regret any of it. It also made my sons into do-it-yourselfers because it's all they ever knew. Today they pull up YouTube videos and fix everything themselves. I love it. The one thing about owning a home is that there is always something you can be doing inside or out.