My problems with lightning:
* must be online to route payments
* node wallet keys must be "hot"
* channel closures cannot be mitigated, one misbehaving node can eventually take down a major portion of the network
* routing "netsplits" are common and difficult to identify and diagnose
* routed payments are not tolerant to lossy communication
* the initiator of a channel can cause the partner to share in the cost of closure
* open and close operations in a high fee environment can stall and lock-up funds indefinately
* becoming a an effective "routing node" requires too much skill and up-front capital, therefore routing fees have not tended to zero as promised
* opening and closing channels for the purpose of being a routing node is too costly for the individual
* the system is generally not used for its primary use-case, which is to make frequent direct payments to a channel partner, where routing is a secondary side-effect of a network of partners and the primary attraction to lightning is not a first-class feature
* submarine swaps and reverse submarine swaps require a third party and/or multiple onchain transactions
* the reference implementation (lnd) does not provide sufficient visibility to operation and what information it does provide is obscured by piles of debug logs
* switching node implementations requires dozens or hundreds of onchain transactions and fees

This is my 80% list 

 i lost money on umbrel

never used it again after that

monero is easy to use, you do not need to open and close channels,
fees are extremely low and it even provides privacy 

 A truly decentralized blockchain is not scalable, this is why layer 2 is necessary. The blockchain is the "value" layer, and frequent transactions (to maintain decentralization) must happen through a different mechanism. Lightning has the right idea: use smart contracts to enforce an auditable trust network. This is the value component of lightning's core architecture. It takes time to identify the problems with this first implemenentation. We likely will need to start over with a new and improved architecture where tradeoffs are hopefully minimized. 

 lightning is not scaleable.
it is a different architecture than bitcoin.
i do not like the architecture and the technology. it is retarded.
you need to convert to satoshis. pay a fee for the conversion.
if you need to convert and pay a fee for the conversion, you can use a more modern, better designed micro payment solution.  

 For example? 

 the market will decide 

 🙄