Random quesiton re: Dress

So i have noticed that there are several people on this site have bought two dresses. How does this happen? Why dont people just stop looking once they have purchased a dress?

I went dress shopping, found my dress, bought it and then had no desire to look at another wedding dress ever and considered that part done. So what motivates some people to keep looking after they have already bought something?

Some girls buy a dress very quickly, and then re-think it later. Others really like their dress and don't intentionally find another dress but come across 'the one' in a magazine of while BM dress shopping etc.

Just some thoughts.

I think a lot of brides get pressured into buying a dress by their mothers/BMs/friends, and then keep looking because they have doubts.

I somtimes see dresses that I think are beautiful on KnotTV, but as tempting as it is, I NEVER give in to my urge to try them on. I think that if I had doubts about my original dress, I might go looking again though....