I've just seen so many corksniffing people worry about the tiniest detail about their guitar, the finish thickness, cable type, IEC cable type, tube brand, potentiometer brand etc. etc., then go on stage looking horrible staring at their feet all night. They would have been way better off paying less attention to all of that and more to their stage presence which is going to be way more noticeable to the people paying them.
Sometimes these folks (and I've been guilty of this) chase the right 'thing' that will make them a better player. Or, they're subconsciously hiding from the fact that they aren't as 'good' as they'd like to be.
I've *never* done that..../eyeroll.
Some of these people will cite famous players notorious for being particular about their gear. What they neglect to recognize is those people made *decisions* and moved on. They found what *they* liked, and never really deviated. Eric Johnson, Yngwie, etc.
Even EVH - who was a *notorious* tinkerer - kept much the same setup his entire career. Yes - he changed amps/guitars/pedals etc. - but they were an evolution of the same idea. Basically, a SuperStrat with a floyd set to down only, a d-tuna into a roaring Marshall-eque amp with some delay, phaser and what-not when needed.