Can you have too many guitars?
Can you have too many guitars? Maybe. Maybe not. It depends on your needs and goals, I guess...
If you're a studio guitarist, you're probably going to need a lot of gear in order to be able to cop different sounds. They're just tools for doing your job.
If you're playing in an authentic cover band, then sure... why not cover all the bases? On the other hand, check out your keyboard player... He doesn't lug a Rhodes, a concert grand, and upright piano, a harpsichord, a Mellotron, a Farfisa, a Vox Continental and a B3 plus Leslie; he has a synth keyboard that gets "close enough" to all those sounds. So for the guitarist: why not get "close enough" with a Variax and a Vetta?
If you're playing the occasional blues jam, I'd say that you don't need a bunch of gear. You're constrained by the genre and by available set-up time. One guitar, one amp and either a dirt pedal or an attenuator should be plenty.
If you're playing in an originals band, the sky's the limit. Just be glad that you have a day job to cover your musical expenses...
If most of your playing is at home, you can definitely have too much gear. When your home starts looking like a guitar shop, you probably have too much... (Unless, of course, you're living alone.)
If you're a gear collector more than you are a player, then you should have lots and lots of gear. Hang onto all of it, because you never know when it'll be worth more than you paid. And again, give thanks for your day job.
Can I have too many guitars. Definitely.
I have some redundant guitars right now, left over from when I thought it was important to have different styles of instruments for their slightly different vibes. I have three humbucker guitars. I play the one that's most comfortable. The rest take up space and distract me from working on my chops.
My goal is to have one single-coil guitar, one P-90 guitar and one humbucker guitar. There's enough variation in the the sound of the pickups to make it worth my while to have all three kinds.