The Psychology of Constant (Equipment) Change

Anybody have an answer?

I have a decent selection of preamps, amps, integrateds and speakers to choose from and I find myself swapping out gear constantly.  And it's not because anything sounds bad.  Quite contrary, really.

After most swapping sessions, I'm generally really satisfied and quite enjoy the sound quality.  But within a few weeks I'm swapping stuff out again.

What would be the diagnosis for my condition?