Yes, of course, but OP was asking about the struggle to add more and not being able to do that easily.Do musicians/composers beat themselves up too much over such things as a "too short" a piece of music. Beauty, it seems to me, can be found in the "diversity" of length. My wife and I frequent museums and see where the size of the canvas does not equate to its beauty but rather the colors used, the emotion or intent displayed. YMMV.
If you want to make a short piece of music, by all means do so. But if you want to create something that is more comprehensive, and are struggling to do that, I think 'craft' comes in to play here.
When I say 'craft', I am not referring to the intrinsic 'art' (or idea / concept) of the piece... just the tools one can use to lengthen / develop / enhance that original idea.