I only write games because I HAVE to. I don't know any other way to make a game.
For the emotional bleed issue, I think you should playtest as much as you reasonably can. If that means only one playtest, then do one playtest. Ideally, get other people t playtest for you (though that's pretty hard by itself.) Or playtest, wait a few months and then playtest again once you're emotionally removed from the first game.
(If you can't do any playtests, I'd want the text to make that clear, and suggest you shouldn't charge for the game until you've playtested it some. But that's a different discussion thread.)