Don't like transparent blockchains. Horrific for financial privacy and free markets. Which there was a Monero Lightning. Have seen white paper or two that it is doable.
Discussion
L2s in the flavor of lightning bring more problems than they are worth imo...
Reliance on middlemen nodes for succesful routing and cheapest fees,
illusion of final settlement,
need capacity to recieve,
can't send modestly large amounts,
both parties must be online to transact,
can be rugged if your node isn't active,
can be force closed onto the base chain against your will.
Monero lightning would have all these problems. Bad trade.
https://www.truthcoin.info/blog/lightning-limitations/
https://moneroinfodump.neocities.org/#JustUseLightningNetworkBro
Worst of all, even after all these sacrifices, lightning overpromises on it's one supposed advantage: scalability.
It's terrible sovereign UX is why 95%+ of users are on custodial wallets like WoS. Which defeats the whole purpose of crypto.
XMR doesn't have RBF(replace by fee), so 0-conf transactions are relatively safe anyway, unlike BTC, especially for trivial amounts. BCH makes this even better with DPS (double spend proofs) which make this 99.9% safe. I think BCH handles "instant" transactions in a better way and Monero should adopt it.
https://bitcoincashpodcast.com/faqs/Tech/what-is-0-conf#double-spend-proofs-dsps