Is it worth building a mining rig for 2022

Hey so I’ve been mining ETH with my gaming computer I have and really wanted to build myself a mining rig from my old pc parts that I have. I had a 1070 , a heat sink, cpu, and ram. All I would need is to buy a 1400w PSU, a mining rig frame, PCIE 16 risers, and a 1 to 4 PCIE expansion card. That will only cost me 350 to get. Obviously I will have to get more gpu and will try and get them as close as I can to msrp. But with all of that, is it still worth it since ETH is going to 2.0 and will make it a lot harder for gpu’s to mine. Would it be work if to just go for alt coins and hope one of them are the next big thing???? There’s a lot of reasons why I would want one but there’s also a lot of reasons why it’s not the best. Thanks for the response in advance