Whenever DH buys anything expensive or important, he takes EONS to make a choice.
A big appliance or as just happened, a new musical instrument, he will stand for hours in the shop trying to choose whilst the assistants get ever more irritated.
Sometimes, he leaves without anything....then goes back later.
He ALWAYS says "Oh....I should have got the other one" a day or so after the purchase.
I pointed this out and he insists that he's happy but he always thinks that...no matter what he buys he worries he made the wrong choice.
It drives me MAD!
How can anyone not know!??