I'm not speaking to the validity of whether or not DNSSEC is actually a good idea. Your contention is that it's not. But saying the equivalent of "no one uses it" is demonstrably false.
In Sweden, for example, around 71% of all users are user DNS resolvers that perform DNSSEC validation (scroll down on http://gronggrong.rand.apnic.net/cgi-bin/ccpage?c=XA&x=1&g=0... for the per-country stats)