What are your best arguments against crypto?

We are going sideways for quite some time now and we're seeing hoping, coping für and everything. But we barely see good arguments against crypto. So what are your best arguments against crypto?

Mine would be the missing ability to reverse transactions. That is to me the single biggest issue. With that ability, the issue of wrong wallet addresses or such mistakes could be eliminated.

Another point that is I very hard to keep track of the developments in crypto. I for instance, focus on Bitcoin and Etherum for my investments, although I'm interested in other projects I feel I need to put too much time in them to be up to date.