You can waste your money if you want. Doesn't mean it was ever a good idea. Satoshi never made BTC for small payments, which is why he knew sidechains were needed.
I would image the majority of these types of payments will be of the the mico-type. If a single chain is to become the default, it will need to be able to handle these transactions.
402 Errors are returned by a website when you need to make a payment for access. Access could be a snail-mailed OAuth token, but crypto now makes this feasible.That's why I'm waiting.
402s been around for a long time, but "Reserved for future use": Already part of the HTTP protocol, and would just take BIP70 on top as a data format. BIP70 is new to me, will read up.
I don't dispute that. Personally I will use what works reliably and securely, whichever becomes commonplace is fine by me, so long as crypto is the underlying asset used for payments
LN isn't even ready for the average consumer making $100/day because the UX expectation is high but the delivery is less than satisfactory. Too much risk even for small txs.