I hear a lot about testnet on the main chain though. I see guides about it, hardware wallets support it, etc. I'm not a traditional "developer" but IMO it's still nice to be able to setup a testnet node and mess around with it first before you dump more real Bitcoin into it.

My end game is to get a LN setup like @DarthCoin talks about in his private LN post, but I'm hesitate to put 3m sats in a hot wallet. If I could test it all with 3m testnet sats I'd feel more comfortable.