Broken things just arent worth anything to me. The day they release a newer model that has the Square button fixed, I'll consider it. This is a community of savvy shoppers after all.
Only a fraction of the PSP's have it so bad that it has to be returned, but the underlying design flaw that leads to the problem is
IN EVERY SINGLE ONE., and is bound to become a problem eventually.
Granted, there also arent any games on it that interest me yet, but I'm sure that will be remedied in time.