I now mainly treat the mainnet as a "settlement layer," and I really don't want to fight with gas fees on a daily basis... For small transactions and testing pools back and forth, I just go directly to L2, which is hassle-free, and losing a little gas fee doesn't hurt. When it comes to large amounts or contracts I haven't reviewed or are more complex, I still prefer to do a one-time operation on the mainnet. Honestly, I’d rather pay a bit more gas to feel secure.

As for the experience, don’t push it too hard—when some bridges and wallets act up, I just stop. I add a retry + limit in my scripts to avoid getting stuck in pending transactions and wasting time overnight.
Recently, I’ve been discussing rate cut expectations, the dollar index, and so on. When risk assets start acting up together, I prefer to reduce the number of "operations": batch everything possible on L2, then finalize key steps on the mainnet. Anyway, don’t ruin yourself just to save a little gas.