Joselitta: OK, but I think that some leave due to the lack of motivation.
Can't exclude that, but it doesn't hurt anybody in a Bracket, as you play your games solo.
Concerning MP games and passes, I'm all with phred.
1) Play a MP game ONLY for the fun of it, or for the credits if you choose the sharks' waters of challenge games. No XP collection, no average polishing - just fun! Chat along, poke some fun, and play (in this order), but expect it to crash anytime, due to quitting, due to unexpected RL events or due to technical discons (which are frequent in connection to the WGT servers).
Nowadays you may include the CDP streak in your thoughts, because - most probably - you would be able to perform your first tee shot.
2) Play with online friends or CC mates. The social bond prevents from unfriendly actions and bad mouthing. Still, games will crash!
3) Don't buy CC passes, NEVER!
The only benefit of any real worth is the Putt & Stroke Pals which come in CC levels 2 & 4. The CC will arrive there (@150,000 XPs) sooner or later with free passes, and that was it! The rest will happen while the CC grows, on free CC passes!
The CC's progress in levels should not become priority!