How to deploy Ethereum rollups without losing your mind

Been building on Ethereum for a while now and something clicked recently. Remember when spinning up your own rollup meant assembling a whole infrastructure team and spending months just getting things working? Feels like that era is basically over.

Tried setting up a custom L2 for a DeFi project last month and the whole experience was shockingly smooth. Used Caldera and had a testnet running in like an afternoon. No joke, just clicked through some options, picked Arbitrum Nitro as the framework, and boom.

The wild part is how much flexibility you get now. Can switch between Optimism, Arbitrum, even zkSync stacks without rebuilding everything. Makes me wonder why anyone's still maintaining custom rollup infrastructure from scratch when tools like this exist.

Granted, there's still a learning curve with gas optimization and bridging logic, but the actual deployment pain is mostly gone. Curious if other devs are seeing the same shift or if I just got lucky with my setup.