I haven't changed mine since I started using this one, I intend on changing it when I unlock something that I like but until then I'll still have this one.
Support/suggestion, how so? To answer the question as generally as possible: Some users change when they unlock something new. Some change when they are bored with the one they have. Some change because they feel like it, and others don't change at all, never had.
I'll change mine when I can actually have one that fits. Which will be around AGv3.