Bottom line, will someone need a certain service or give value to a certain coin in a few years that you can buy cheap now? None of us know.
As the current deep correction works out the new mellow spot between the old highs and lows I suspect the most popular ones should begin to gain value first.

But it seems more fun and educational when you use your own beliefs and knowledge to choose what will work and won't work. Also, I've learned the hard way to separate marketing hype from actual functionality/interest/team capability.