This is unnecessary dark. You will definitely be able to do those things when your kids grow up and leave your house. You will also most likely be able to do them much sooner - teenagers don't need constant help or supervision, and even earlier you can easily arange something with your spouse so that one of you can take a couple days off. 7-8 years old is probably a good treshold. Also, you will be able to engage your kid in a lot of your hobbies. Once you show them why you like them, chances are they'll like them too.