All F2P MMO games now wants u to spend money on it, it's up to u on how u playing it, if just for fun then it's good. If you really want to progress(get better gears/weapons) then u need to spend money or grind like crazy on it.
That's why P2P games is better at the moment, you can casual play or push to endgame contents but the trick is you need to play monthly sub for it