If you believe cryptocurrency has a bright future and will change the world, it doesn't necessarily matter whether you buy when Bitcoin costs $60,000 or $30,000 per token. If it ends up reaching, say, $500,000 per token someday, you'll make a hefty profit regardless.
Of course, there are no promises that Bitcoin or any cryptocurrency will succeed. But if you're going to invest, it should be because you believe in its potential and are willing to hold on to your investments for years or even decades. If you're only investing to try to make a quick buck, that's a dangerous game and you'll likely end up losing more than you earn.