When I found Macross World a couple of years ago, and re-kindled my Macross fandom, I was going to buy two of everything.
Then, I realized that I just don't have the finances to do that with mortgage, kids, wife, cars, bills etc etc.
So, my originally huge collection has now dwindled down to what I consider to be the best of the best.
I only have Valks of 1/48 scale or better, and Gundams of 1/60 scale. So I decided that I like them big and detailed. While this means less physical pieces, it doesn't save me much space or money since the toys themselves are bigger, and more expensive since all I will buy are 1/48 Valks, and PG Gundams.