I've seen some posts about people asking to which short term government bonds ETF to buy to decrease risk. I compared SGOV to my brokerage money market account current yields, they are about the same (money market account has 0.10% higher). Why buy short term government bond ETFs if the money market yields are similar? There's not much price fluctuation, if at all, in either case. Only thing different is making transactions into other brokerage investments, buy from/sell into the money market account, more easy with just leaving the portion in your brokerage money market account.
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Addendum
Good points on comments
1. In taxable accounts, treasury bond ETF distribution are not subjected to state and local taxes, where money market distributions are. All are subjected to federal taxes.
2. If buy treasuries directly, the yields are higher than treasuries ETFs
3. Real yields= yields - inflation rate (around 3.3%)- expense ratio
Though we get taxed based on the distributions, despite the real yields calculations. Remember point #1
Learned a lot from the comments.