I have worked from home two days a week for 15 years, and it's probably the single most important reason I've stayed with my company as long as I have.
But now that I am FI (at 51), and trying to decide how to not end up in OMY Land, I look at my work situation and realize that what I really want is more flexibility, to cut back the hours that I appear in the office on non-telecommuting days, as well as additional time off and the ability to work a couple of weeks each summer from a truly remote location for, say, 10 working days in a row.
There are some portions of my job that require my being at the office--so I am trying to decide if I should propose cutting back to part-time, getting rid of the stuff that forces me to actually put in an appearance. I think it is a situation that will require a lot of negotiating and open minds on both sides, but they are aware of my changed circumstances (new widow) and they would be in a bind if I bolted completely. I am looking to bring it up this fall, and so am spending these weeks ruminating on exactly what it is I want.