I use .xyz because I have a very common first and last name, and nearly all of the permutations of them were taken on .net, .com, .org, and .us; .xyz seems to price based on how desirable they think the name is, so I still couldn't get $FIRST-$LAST.xyz for a reasonable price, but I got something close.
I do too, aesthetically it's great. Unfortunately the rise in phishing from xyz domains means if you use it to send email your deliverability is likely to suck.