Due to network congestion and also its price. Eth are almost $3k and this is an expensive price so expect the gas fee to soar high too. Well its not ideal but even though its expensive theres a lot of people still using it due to many dapps and ecosystem still revolving and residing on eth network. Me too lve got a lot of farming projects that are in eth network. Its not that I wanted to use that but maybe I dont have much choice.