Most of the reasons mentioned. I've always built stuff, usually involving working wood. I made muzzle loading rifles for quite awhile. When I got into ventriloquism as part of my act, I started making my own characters. That got way out of hand! When I had to give up my last shop, I was one of the last five guys in the world still hand carving professional wood figures. (There's an art that's become obsolete!) Then I had a long period when I couldn't do anything... don't want to go there. When I started to recover, I found I couldn't see well enough for open sight rifle shooting any more but I still wanted to be shooting something, so I went back to archery, which I'd done in my youth. After a period of buying and collecting bows, I found wanted a duplicate of the first bow I had, but with glass. I found no one really did a good job of duplicating it. I also needed a very light bow that I could shoot with strength limitations, so I decided to try to make it myself. I equipped a new shop and had at it. That was more than 30 bows ago and I can't seem to stop. I'm coming up on 73 years old, and building keeps me active in my new shop. As someone else mentioned, the bows keep getting better. I took my latest out for its second 3D today, and it just knocked my socks off. Hope to build many more and keep improving. I'm also teaching a few folks to build and getting a lot of satisfaction out of that. All in all, I haven't found any down side except the cost of glass, wood and glue but I'm blessed with a small income from another hobby that lets me hold my own, so no reason to stop...