As a thought experiment, let us imagine you have been sentenced to death (that still happens in the USA, right?)

5 years from now, you will be killed.

Would you rather spend those 5 years jammed into a concrete cell with thousands of other inmates, unable to move, standing in your own feces, never to see the sun and only eating corn?

Or would you rather have a bed, running water, proper meals, be allowed outside in the sunshine for some hours a day and even get some exercise?

I think it's pretty clear which one you prefer, and we should treat non-human animals the same way. They're alive, lets treat them with some respect. (That applies to death row inmates, regular citizens and animals equally)