They allow faster and cheaper on-chain transactions. Some prefer to avoid LN if possible, especially as its topology may turn out to be not as p2p as people pr

They allow faster and cheaper on-chain transactions. Some prefer to avoid LN if possible, especially as its topology may turn out to be not as p2p as people prefer, and LN nodes may be operated by corporations who may or may not have KYC regulations that people would like to avoid. Besides this, there are general PoS vs PoW differences--some consider PoW an undesirable waste of energy while others consider it a way to secure the network.