Sometimes I really worry about the attack vectors on Lightning, but more about the potential solutions than the attacks themselves sometimes. For instance like Channel Jamming mitigations, but there's others too. Potential ideas like reputation based routing, prepayments, and trusted debt-based solutions really worry me if we were to go down that route. To be honest, I don't think any protocol dev is in love with any of them. On one hand, we have not felt the pain yet and so it has not been prioritized, so I hope that changes in order for us to grow. On the other hand, it does give us a chance to think of even better solutions.

The reason why those ideas worry me is that it stops being about a trustless decentralized/distributed based network and more about major hubs and high fees. I worry that small payments will die off and large payments cost more than on chain fees.

My saving grace, at the end of the day, is that we resort to satoshi's original vision of payment channels between two parties. No routing, no gossip, no threat vectors. Just an IOU that settles on chain between two parties, even if it's just a user->merchant one way solution. That can still be an improvement to bitcoin today. Or friendship channels as @futurepaul likes to talk about them.