Yes, I have always thought that it would be hard to be original if one were jealous of what other people were doing. I have only a small collection of stuff, and I do not even have the space or the willingness to keep most of the bikes that I build - they either get stripped down, or partly stripped down if I can actually use it. Bicycle parts have become more like Lego to me.
A serious question though - when you group together all the parts, do you know which parts you will be selecting, or do you actually make the selection as you go? I am really interested to know, because I make all my parts choices kind of instantly, often even before I build the bike. I just grab the box of brakes, for example, and make the choice then and there. I honestly do not know how other people make their choices, but I would kinda like to find out.
Many years ago, when I built motorbikes, I used to go down the breakers yard and say "I want a tank, about this big" (holding my hands about 40cm apart), and they would get me one 'about that big' and I would buy it. All I did was to explain sufficiently, and they would make the choice. And I would make it fit well. I really do not know how other people make their choices.