Possibly the best instrument ever, it can be used in just about any style of music, and virtually an ENDLESS amount of tones can be achieved on electric guitar by changing your amplifier, pickups, amp settings, adding effect pedals, etc etc. Individual playing style also affects your sound which most people aren't willing to accept. You won't sound like your idol even if you are using exactly the same equipment.
Also, an instrument which practically everyone in the world claims to play, yet only a precious few are any good at it. Just because you can play power chords, tune in drop-d, or get weird sounds using a ton of effects, doesn't make you a decent guitarist (don't get me wrong, there are a lot of interesting things that can be played in alternate tunings including drop-d that can't be done in standard tuning, but that isn't usually why they are used).
Nowadays companies such as Warmoth allow players to build custom guitars that will look and sound the way they want, however a basic knowledge of tone woods is required and they don't guarantee that the guitar will sound good when put together.
I thought playing the guitar was supposed to get you laid. Damn, I must be really ugly.