I think all of us who grow are also collectors (lesser or greater) - it comes with the package deal... it's automatic... goes with the territory. I don't think one can help oneself. Anyone who obviously enjoys fresh food & growing your own (be it vegetables to fruit trees, berries to even just herbs), when one discovers all that is available 'out there' besides the monoculture of things offered in most grocery stores, a flip is switched in the brain I think... you instantly want to try them ALL!! That's what happened to me when I came across my first catalog from the Seed Savers Exchange! I was in awe, filled with excitement, and even a little sad for being deprived of even knowing about the bounty of foodstuff that one could get to sample in a lifetime if they wanted to grow themselves. (my mind was blown of discovering that 1000's of tomatoes are available, hundreds of melons & not just 'cantaloupe and honeydew', that there was more than 1 type of okra - purple even! - all the kinds of figs and apples out there (and nearly cried when I learned 100's are extinct, never to be tasted again!) all the different flavors of mint or sage... and on I could go...)
Ditto with peppers!
Do we not ALL (when we find something we like), want to try all the variations? The different color types (like with all the current Bubblegum colorations), different shapes, or those originating from a different locale across the globe. What about flavors- fruity, flowery, smoky, sweet, etc...etc... and of course the difference of heat. Some are attracted by the foliage, blossoms, structure of the fruit - thick, crunchy, thin, soft - and so much more. This is only scratching the surface - some 'collect' for fresh eating, others for drying, those for sauces or specific culinary aspects (like stuffing!). You get my point. lol
Those who are the dedicated 'creators' I think are certainly automatically collectors, it is the palate they paint with! The sauce, powders, or whatever is the canvas, they the artist, the peppers are the paint - and the greater diversity of 'color's' they have, the greater options they have to mix and match to create a masterpiece!
This goes with any food (or something one enjoys)- I love chocolate with a passion, there are 100's of bars out there (all the percentages of cacao, places of origin for the beans, etc..) & I collect the wrappers. Same with the insane amounts of cheeses available throughout the world... what about coffee or tea drinkers... wine collectors for sure... to cigar collectors - they all have that collectors switch turned on in their brain. Again, it's automatic- we want to sample them all!
So long post made short- yeah, I collect! I'd be surprised to see someone who DOESN'T collect in some way.
Now what are these 'weird' sweet peppers & tiny peppers you speak of, any specifics..? I'm intrigued (perhaps to add to my COLLECTION!!.. haha)