had to bridge some eth to PGN and I'm sorry to say it to all the Optimism forks, but it's super annoying. I'd prefer if we all used Optimism
No, you are right. Bridging is one of the big barriers to mass adoption of blockchains. It sucks. The UX must improve significantly.
There will be many more but challenge is UX not number of rollups out there. We need better UX/infra/tool.