There are a lot of various opinions about safety issues. Starting from Satoshi himself, originally there was no limit as far as I know, then 1MB size was implemented to prevent spam, but it was a temporary limit, and Satoshi was advocating that the network in order to scale needs to increase the block size.

So here I find the next reasons nowadays about the BTC 1MB block size limit.

1) There is a safety issue with large blocks. What exactly is that safety issue?

2) Less nodes can support the blockchain with large blocks. It would cost more to buy large storage for the blockchain.

3) The network can be spammed with large blocks. But what is an effect of that spam, how dangerous is that spam for Bitcoin blockchain? .

Coming back to the nodes and decentralization issue, there is a statement I have heard many times.
If Bitcoin implements larger block size, less nodes can support the network, making Bitcoin network less decentralized.

Here I come to the point of Decentralization.
Bitcoin is decentralized in 3 ways.
1) Network is supported by multiple nodes / miners.
2) Coin generation is being made by multiple nodes / miners.
3) There is no central point of control over network, no matter how much nodes are running the network, the configuration of Bitcoin is designed to support an autonomous operation of network without a human control. There is no administrator that can restrict users from opening accounts, transacting and etc.

All 3 ways of decentralization are combined and important, but I think the whole point is the absence of a central point of control, and the network support by multiple nodes just helps to reach this goal.

Some people tell it's better to pay high transaction fees and use a network with a larger amount of running nodes that pay less fees on a network with a smaller amount of nodes. In both cases, the decentralization of network remains the same, there is no administrator in both cases.

Why users should pay more transaction fees, and make the usage of network less attractive, while nodes / miners can spend more money to buy a larger storage and support a greater amount of transactions with benefit, collecting fees by more confirmed transactions with low fees, instead of confirming less transactions with higher fees? When both internet speed and hard drive storage is much higher today in 2020 comparing to 2010.