BTC is a tricky play this late in the game. I am especially worried about all the comments of it hitting a couple of hundred grand a coin. That kind of speculation draws in crowds of desperate, vulnerable people.
That said, it may have legs yet. Hell, there's every possibility of it making those levels. Look how far it has already come.
I agree with your dot com analogy, this feels much the same but with even more people, more money and more mass.
The huge transfer costs and the time delays make the currency all but unusable for day to day purchases but the idea is sound even if the execution is lacking.
I'll be buying other cryptocurrencies but I'll be very careful with BTC, playing only with pocket money in the full expectation of losing most of it.
And yet, we can but dream :)