I've been playing for a long time, which goes well with my "slow but steady" playing style. (;
I easily get attached to my pixels and have lots of pets that won't be traded away no matter how much I want another more valuable pet, or how good an offer I'll get on them. I always figure that sooner or later I get all the pets I want – it might just take a few years. *chuckle*
I started way back before accounts existed, in August 2008, by adopting this guy:

I quickly got myself a whole bunch more (I'm a bit of a pack rat and I totally wanted all outcomes of the pretty doggies so... haha).
I've played pretty steadily over the years, there was a short time in 2009 when I was absent for a few months but otherwise I've just missed a month here and there so obviously CS seems to work for me. (;
I enjoy sorting my pets, but groups are not always easy enough to sort in and keep track of so I figured a thread for it might be easier for me. (: