There are a number of reasons for me. First, my freezer is currently full of alot of crap that I need to toss on the compost pile. I have some beef in there that moved back from Wyoming, some tuna steaks that DH never wanted to have for supper, a slamon that is freezer-burnt so bad that it is practically freeze dried, a box of 6 chicken Kiev that has a best by date somewhere back in 2014 that DH never used while he lived alone for 6 months, etc...
We have had the power go out during storms - nothing over 10 hours, so we were OK, but there is always that chance. I started canning meat in Wyoming when we would loose power every time the wind blew - I was worried that the brown outs would burn out the compressor on the freezer.
But the best reason is that is recipe ready or ready to eat. I can grab a jar off the shelf and have chicken enchiladas put together and in the oven by the time I would have frozen chicken defrosted and ready to cook. That is a good thing for weeknights after work.