I love that you are finding new ways to enjoy the hobby, instead of throwing in the towel. None of us are getting any younger, so it's important that we acknowledge our new found limitations, instead of letting them get the best of us. In the last couple of years I've started entering contests, and have experienced some success. It started becoming addictive, and I found myself building to enter a competition, instead of for my own enjoyment. I would rush to finish in time, and started taking shortcuts and ended up making "rookie" mistakes. We all need to remind ourselves why we build- because we enjoy it!