To those who are saying lightning network is bad :
1) Some people think that LN only lower fees for those who are doing a lot of transactions. If you stay in the lightning network a very long time, you will be able to do little transactions per unit of time and only paying once onchain transaction fee to get to the lightning network and once to get out. You will also pay for using lightning network every time you do a transaction but very little.
Even if Alice is doing one TX per month, If she stays 1 year in the channel, then, she will pay only once onchain transaction fee to get to the network and half onchain transaction fee (split between the two channel users) to get out.
2) some people think that you have to create a channel for every user you send money to. But no, you have to create only 1 channel with another user. Then you will be connected to the network and your transaction will find its way through the network to the user you want to pay. Your wallet finds a route through the network to those people as explain here
https://bitcoin.stackexchange.com/questions/43700/how-does-the-lightning-network-work-in-simple-terms
3) LN will lead to centralization. why? If a LN is too centralized and make decision that make its user unhappy, then its users vote with their feet and leave the network, close their channel. They create a new network on their own. No big central entity will be capable of controlling this. Meanwhile, the blockchain remains with small size blocks enabling plenty of nodes that keep the system decentralized.

The way I see it is : Blockchain : the place where you store your value
                            LN : the place where you use your value to pay for things