"I'll rather have Bitcoin adopt large block sizes like BitcoinCash. That'll speed up transactions and keep it fully decentralised." - the speed of blocks are the same, having empty blocks is what speeds things up, not the size cap.
You can't scale a blockchain up without losing decentralization. We have to be really careful here.
Pushing the blocksize up too much would end up with less nodes/mimers because the blockchain would be too big for many people. And this isn't just about the size of the hard drive, it's about the need for more RAM, CPU and most importantly, the internet bandwidth. Yes, people in first world don't care much about these, people in third world countries do.
Anyway, #Bitcoin blocks are already at up to 4MB which is 1/8th or bcash Max of 32MB.
If bcash magically became the only currency in the world, that shitcoin wouldn't be able to handle the transactions. LN is capable of it. It ain't perfect BUT it's the best we currently have.
"I don't really trust Lightening from the little I know about it. Having to pay a provider to manage a pseudo-centralised node to which you can carry out small quick transactions is kinda scary (but again, I'm paranoid of every centralised thing after seeing how politics has evolved the last few years 🤣)" - run your own node, nobody is pushing you to pay someone to use theirs.
If you really are that paranoid, RUN A NODE. Seriously. If you're connecting your (HW/SW) wallet to anything but your own node, the software is leaking way too much of your info.
If you want to be a part of a decentralised network, be a part of it, not just a user, trusting third parties.
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