For the moment, I think it's better to invest fiat to crypto if you want to take the train quickly.
IMHO, I would wait for new specific NVIDIA/AMD harware coming soon because the difficulty will become insane !
The new hardware would be equally expensive ? Yes trading works but I wanted to get my hands dirty into mining.
New generation motherboards and graphic cards are on the way.
The question is to know if buying hardware now will be profitable after 3 month ?
That depends on the coin I'm mining isn't it ? Like the gentlemen above said Eth is going Pos in the upcoming months so I'd think twice before investing in that mining setup.