You can be oncall from home. I found it perfect, just hanging around writing some code and get occasionally a page or two about somebody misunderstanding what production readiness means. :) On a more serious note, it is fun to work as an SRE, lots of problems you haven't seen before, many opportunities to learn about large scale systems. This sort of knowledge and view point that comes with it is invaluable for other companies too, you can move forward with your career faster after being an SRE for few years. (Amazon asks you do that for a year before you can move on to a different role).