Gets boring. Hey, it’s a fun game and gets you active hatching eggs and searching for these beasts, but if you’re competitive, it’s a fail. There’s no “winning”. And Leveling up gets difficult but doesn’t have a whole lot of benefits. For example I’m a level 26. A level 7 could easily take a gym from me. There’s just something wrong there. It doesn’t make sense. Spenders are competitors. That’s just fact. Look at Game of War.
I’ve spent, but since I’ve realized that no matter how high leveled I get, anyone can take a gym I’m atop, I won’t put another dime into it. I just don’t care. Unless there’s some update making your level, and the time you’ve put in matter, this is best used for exercise, or a kids game.