I’ve recently been doing some instant coffee with milk and it is really fucking good. Around February I wanted a bit of a classic snack the way my grandparents would, some sweet bread with instant coffee. So I got myself some. I had forgotten the powdered creamer, so I used milk. I was pleasantly surprised.
There is nothing wrong with instant coffee.
I enjoy dissolving it in a small amount of cold water before adding the hot water.
For an interesting drink, whisk equal parts cold water, sweetener, and instant coffee until it makes a tan foam (hand brother works great for this) in your mug. Add cold or heated milk and stir.