I don't always play World of Warcraft. I played it when it was new, didn't much care for it. Many years passed. Didn't think much about it. Some friends of mine played, and I would hear about it usually rolling my eyes.Then sometime in 2012 a close friend of mine gave me an account with a fairly large amount of playtime on it. I began to play, and found something in the game that interested me; mount collecting.
So I saw the end of the Cataclysm expansion, and the beginning of Pandaria. The account ran out of time, and I didn't return till right before the next expansion would hit. This is where my mount collection got much bigger.
The expansion, Warlords of Draenor, had two things about it that made it very friendly for my hobby. One it was a very friendly expansion for making new characters and getting them to max level. It was also a very easy to farm gold in due to the addition of Garrisons. So once a character was at max level you spent 5 min doing your garrison stuff, and then had free time.
So between lots of easy gold, and lack of much else to do, I was able to acquire most of the available mounts at the time. Mounts from old raids that have a 1% drop rate, not to hard to get when you run the old raid 10 time a week with all your alts. Mounts from 5 man instances, there again no problem, but even faster because you can run those every day. And of course the ones that you can just trade between players, that is where the garrison's gold comes in. It was a wonderful time.
Then Legion came out. It was not friendly toward alternate characters. Nor was it a great from gold. So again I left. Came back just last month, friend gave me some time. Not sure if I will stay.