For me, new gear does not inspire me to improve. Its watching videos of good players that inspires me to improve. I don't even intend to have too many guitars as some will be neglected. One main axe and one back-up axe is enough for me, and they don't have to be expensive either.
Even if you have a $2-3K Ibanez RGA321, if you can't play well you wouldn't sound good either, isn't it? My take is that the guitar should not matter. It should be your aspirations to become a great player that makes you want to improve.
I AM SO WITH YOU. I dont see why ppl think that better gear makes them better guitarists! You can own a Gibson that costs a few thousands and still stink worse than a skunk. And hell yeah, the guitar doesnt matter, its the guitarist that does, and gear doest improve your skills [admit it your just suffering from GAS]
Let me put it this way... If you've been playing humbuckers in LPs all your life, and all you play are ACDC, Slash, Page, Zakk Wylde, etc etc, your chops would have been honed to one direction.
If I suddenly throw you a set of nice single coils, you suddenly realise your tone becomes very different, and the style of playing required is very different. Then you start to check out people like Robert Cray, SRV, Clapton, Frusciante, Mayer, etc etc... And you end up learning new stuff, and improving yourself as a guitarist.
Different guitars give different feel and different tones. Learning how to use those tones is something you'll never finish in a lifetime. Every different guitar, or even pickups alone commands different styles. Vintage to modern, Single to humbuckers, split to parallel, all require different playing styles...
Isn't that growth? I've been playing for 20 years. I've gone through more guitars than I can remember... And yet, with every new guitar or amp or pedal I buy, I experience something different. Hence I end up learning new things. So, the desire to learn requires new guitars to fuel, and vice versa...
And I can say one thing for sure: One guitar (or rather, one type) isn't near enough fun of what you potentially can have.
Yes, I have GAS. But every guitar I own has a particular voice, and I had to learn how to project that voice correctly each and every time. And I hope I never stop.