I just want to chime in and say it's a rather nice to see an earnest and pleasant response like this.

To your first point about the small animals in the fields that are harmed by agriculture, I think that's worth having concern about overall, certainly. But many of the animals that people currently consume are fed large quantities of crops that incur that same cost. The average beef cattle is eating such things for 18 months prior to being slaughtered, breeding sows do the same for 3-5 years, and their offspring 5-6 months on average.

If there are advances in things like cultured meat that can be produced in a sort of industrial setting at a competitive price it might be possible to drastically limit both the conscious and inadvertent harm to animals.