Some amount of discipline is certainly good, but too much can be bad for your health. It comes down to value.
It's okay to not finish side projects — they were fun for a bit! Good for you for finding some low-cost fun!
I make music in my spare time and in the past year I think I barely have an EP worth of tracks that are _nearly finished_, but I've got dozens of neat loops. I've come to peace with this because the value I'm looking for is in the act of spontaneous creation with my instruments.
I put down movies, tv shows, video games when they start to feel like an obligation rather than a fun pursuit. The value starts to taper off. I think that's okay. I have a day job making computer things, a family… free time is so precious. Why force a non-interest?
It starts being a problem if the side projects aren't fun for a bit. Such as if they're really big and complicated and absurdly tedious and you only do them because they're "going to be really fun in a year" or something, and you never get there. Or you do and find it's still tedious work.
It's okay to not finish side projects — they were fun for a bit! Good for you for finding some low-cost fun!
I make music in my spare time and in the past year I think I barely have an EP worth of tracks that are _nearly finished_, but I've got dozens of neat loops. I've come to peace with this because the value I'm looking for is in the act of spontaneous creation with my instruments.
I put down movies, tv shows, video games when they start to feel like an obligation rather than a fun pursuit. The value starts to taper off. I think that's okay. I have a day job making computer things, a family… free time is so precious. Why force a non-interest?