I have bought my 16th domain name today, randomized.info, for a project that I am going to do some day soon.

The way I see it, domain names are like Internet real estate. And indeed, some people market them like this (though I wouldn't). The domain name system and the top-level domains everyone knows and loves (.com, etc) are not going away anytime soon, nor is there any kind of suitable replacement to solve its inherent problems.