Lots of folks cook like that, and think it's fine.
And wonder why no one likes what they cook!
I learned to cook before microwaves were invented, but at first it was the simple stuff -- hot dogs, canned chili, minute rice, the usual culprits. But after getting married, suddenly putting food on the table was "my job," and I'm creative, so... over the years, I got better and better. My son says he loves my cooking, because although I will use "packaged" stuff like the various Helpers and Knorr sides, I'm simply incapable of leaving them alone -- they're my building blocks for something much tastier than ever came out of a package.
And in many cases, I learned to cook things "from scratch" -- spaghetti sauce, early on, though now I can't digest tomatoes so that's a no-go -- jambalaya, one of my son's faves -- and an AMAZING apple-walnut-raisin spice cake that uses mostly whole wheat flour. For quickie shit like rice, microwaves are fine -- and some people use them for stuff like bacon, which seems a total travesty to me -- bacon must be cooked in a skillet!
Andria