I think many of us have questioned how much time we've spent on the game, but as long as we always keep in mind it's just a game then should be fine. I have met a pretty large circle of folks through doing ubers, and basically 95% of us logs in every day, at least to check the AH, usually to do at least one run, typically more. So misery loves company, but so does addiction and having fun.
I know I've spent more time than I should have and so am gradually cutting down. It's so bad my daughter just showed me an essay she wrote where comments on the time she called me to pick her up after her ECA and I told her to take a taxi because I was in the middle of an Uber run :) I stopped wearing my HF ring at P78 because that's half-way to 100, and I know I can't spend double the time since 1.04 to reach P100. I figured I now have enough MF boost, but it was also done to help me ignore the drive to level up and do more runs than I really ought to be doing.
Net, yes you're addicted, pretty much all of us are. That said, it's fine to keep on playing, but perhaps fewer 3am runs is all you need to feel balanced. Good luck and keep having fun.