Why Buy Signature Guitars?

Many people go out and spend hundreds or even thousands of dollars on their favorite guitarists signature guitars. Which is one reason I don’t reccomend buying them, you are paying for the name not the guitar. Also because it gives you no I mean zero orignality. Did Slash use his favorite players guitar. No, so why should we use ours. But if you really like the look of a signature guitar buy it but don’t but it because your favorite guitarists uses it. Buy it because you like it. I would like to here some reasons that would or would never buy a signature guitar.