the natural order is
BTC move big wealth
LTC + doge move small wealth
yeah, i think we all realize there's some altcoins with tiny fees. but to some people that kind of makes them feel like a traitor to bitcoin. they thought they could use bitcoin for all their banking needs. well, if you're willing to pay then i guess you can! but lesson #1 is the blockchain doesn't care about how expensive it is for people to make a transaction it really couldn't care less. otherwise it would have been designed such that the fee could never be more than a certain amount in US dollars. I realize that doing that would require an oracle of some kind and people would be against that though...
Block explorers will be compensated in the future . With fees of a thousandth of a cent per tx , it will be nothing for a user that wants to check his tx to pay 0.01 $ per check .
With bitcoin the way it is right now, that doesn't seem logistically possible to do, aka, micropayments. Unless you as the node operator accept Litecoin. or some other altcoin with low fees. but that would be like encouraging people to use Litecoin instead of bitcoin...
In the Linux space you won't find the absolute, perfect Linux distro that does everything. Have you ever seen Linux distro wars/heated debates?
Why should Bitcoin be the absolute, perfect cryptocurrency that does everything?
That's why multiple cryptocurrencies exist. People should make peace with that fact.
Of course that doesn't mean that every altcoin has a purpose. 99,99% of alts are scams. But some long-standing alts (like XMR, LTC, DOGE) are here to stay, I think that's obvious.