I'm just afraid of the day that I'll have to remember IPv6 addresses that look something like this:
2001:0db8:85a3:08d3:1319:8a2e:0370:7334
instead of just knowing my simple 12-digit IPv4 address like I do now. I'm sure domains will be getting snatched up even faster then!
I guess we'll be set for a long time though because there are about 4 billion IPv4 addresses possible, where IPv6 has enough room for 3.4×1038 unique addresses