I have a pretty utilitarian viewpoint. I pick up stuff I intend to use; the 'buying and acquiring' buzz does nothing for me; it's more of a burden (time spent researching, selecting, integrating, etc.). Being a musician, I only select instruments and gear I will use. I admit to having about 17 guitars, a recording studio, a piano, a keyboard, 3 synthesizers, and a variety of other instruments, guitar pedals, a bunch of good mics, mic stands, speaker stands, etc. that I use when recording. But the key thing is I use everything I have.
Since I am not wealthy, most of this gear was bought used.
There is a fascination some musicians (and apparently audiophiles with hardware gear) have with getting the 'latest and greatest' new stuff, called GAS (Gear Acquisition Syndrome). The website formerly known as gearslutz.com (now gearspace.com) panders to this neurosis.
VST plugins are an example for recording nerds like me. It's easy to collect thousands of these, but each has a learning curve, each has a cost of ownership, and most importantly will suck time from my life that could be better spent writing and recording music.
So, to me, the choice is simple. If it doesn't get used regularly, it is removed...