It's a process. There certainly are a lot of scams, and correct regulations need to be in place. It is a tool used by people who do harm, though it is not the cause of harm. At the same time, it's helped a lot of startups innovate in non-traditional ways, and i think a global and affordable currency that is not tied to the local currency has the potential to help a lot of people. Ethereum in theory should be more stable in terms of price as it keeps being minted and destroyed trough use of the blockchain. You can speculate with it, or the ERC-20 tokens in it's ecosystem. Ledger size is an issue i've had to deal with myself setting up a node, but it's also an issue that can be fixed in several ways if it looks like it could become a significant enough issue, as they did with PoW to PoS.

I think it's hard to measure what good and bad crypto is done when you only hear about outragous corruption and crime but not how the everyday person uses it. I use it in a way that helps myself and others and I'm no north korean drug lord scamming people.