For what purpose do you generally want to store funds in cryptocurrency, specifically in USDT? If it is a universal means of payment or a means of purchasing other cryptocurrencies or NFTs, then the BSC network is no worse than others. And when compared with ETH, it’s even better in the context of the size of the fee's; we do not take into account the Dencum update for L2. Swap's and bridge's mechanisms allow you to transfer your USDT between many networks very quickly and at low cost. I myself use BSC (USDT/USDC) and Polygon more often, and Solana a little less often.