I've been dressing fir just under 5 years and the answer really depends upon when you ask me.
It's leveled off a bit in the last year or two, but I still go through a waxing and waning cycle of sorts. When it's waning, the stuff just sits in my bat-cave unused. I'm usually occupied with other things in these phases and don't really think about dressing too much. These times can stretch on for weeks, but sometimes during a lull I'll hop on here or take out a few things and partially dress for comfort. I never used to do that, so maybe overall it's trending upwards albeit slowly, in fits and starts.
When it's waxing, the collection comes out of the bat cave and sort of invades my living space. It's like I need to have everything accessible. During these times, I order new things online, add to the collection and try out new looks. I haven't ventured out or told a soul, but I do enjoy those peaks. Usually they'll last a week or so before reducing back to medium or low interest in dressing for a while.
But since you're asking tonight, I'd have to say waxing. I'll see you on my way up Freddie!