I remember reading that the Lightning network can be attacked by people spamming it with withdrawal requests, resulting in funds being stolen from users. Furthermore, I remember reading that this attack is to some extent not solvable. I need to find a link. [EDIT: I think this might be it: https://decrypt.co/33917/bitcoin-stolen-lightning-network-at....]
I'm pro-Bitcoin, and I own some, but what worries me is whether the scalability problem will ever be satisfactorily solved. It's been 5 years since Lightning was first suggested and it's still only at Alpha stage.
And if the scalability problems are never overcome, will Bitcoin still maintain whatever value it has now?