guys, stop swearing, we need all three types of bitcoins at the same time: small blocks, medium blocks and large blocks
No.
Small, medium and large are all relative terms. How long is a piece of string?
What
is needed is Bitcoin.
What is
not needed is almost all of the non-Bitcoin coins (a.k.a. shitcoins). Now, BCH & BSV are the king and queen of shitcoins. Not to mention the "self-proclaimed Satoshi Nakamoto" Craig S. Wright. He is certainly
NOT needed.
tl;dr
Buy Bitcoin (BTC).