I waited to register a domain matching the name I was using as a musician and it was scooped up six months later by a malware ad company. I now register anything I plan to use in the future, even if I'm nowhere near ready to start. However, the domains that I register aren't related to properties or people and I'm not grabbing them just to sit on them or resell them. People who do that are, to me, unethical bottomfeeders.