We have a 20+ year old burr grinder (but I *really* can't taste the difference between burr and blade) and a $30 Mr. Coffee. My opinion is always that if the coffee tastes bad to you, that means you're not putting enough coffee in the pot.
We buy 2lb sacks of whole bean coffee at Sams. When we used to have a Costco nearby, we bought it there (and they roasted it in the store.)
As soon as it brews, we put it in a thermos so that it doesn't sit on the burner.
I find the one-cup-at-a-time brewing to be silly. It doesn't seem more convenient to me in any way. And if you buy the pods you end up spending something like $50 a lb on coffee.
But I only drink one cup a day. Hard to make a just one cup from the normal drip brewing process. Our coffee consumption (not ingestion) and spend for it has dropped to about $2/day. Plus variety is the spice of life. Different strokes for different folks.
Well, I hope you have a reusable pod, otherwise I will facepunch anyone with a Keurig who throws away a plastic pod every time they need a hit. That is so incredibly wasteful, unnecessary, and horrible for the environment. I'm usually on team "good for you, not for me," but Keurigs are SO awful if you put even a second of thought into it that I'm surprised to hear anyone here defend using one. $2/day for one cup of coffee is also really expensive. A tall cup of drip at Starbucks is $2.09. You are barely beating the universally-maligned Starbucks habit. In comparison, I buy a 2 lb. bag of organic whole beans at Costco for ~$17. It lasts me at least a month and a half, usually closer to two months. So at a minimum, that's 45 days of coffee. $0.38 per day, marginally more if you divide out the cost of filters and the machine. Think about it.
Also, I've also never understood why people think it's hard to make a single cup of drip coffee--you just...learn how much you need for grinds, and put in the appropriate amount of water? Maybe buy a four-cup machine instead of an eight-cup if the minimum fill on your eight-cup is too high? Or explore the many alternative methods for easily producing a single cup of coffee, e.g., French press, pour-over, Chemex, etc.
For daily use, I have a Mr. Coffee with a timer. For weekends/fancy time, I have a French press. I have a blade grinder and buy whole beans from Costco.