Yes, there is butter that is like a bland grease block. Then there is stuff like Irish butter that has noticeable, variable, taste. The emulsion from high quality butter is silky smooth, creamy, and surprising light on the tongue, as opposed to leaving a greasy coating on it. The emulsion holds better as the butter melts, with better butter. The way it softens differs in ways that make it nice to cook, and bake, with. It spreads much more nicely. There really is a major difference between industrial production butter, and butter from a real creamery.

I highly suggest you get some huge corp butter, from a big box grocer, and a block of butter from a quality creamery, and then compare them. You will instantly notice the difference. Melt some of each, cook with some of each, spread some of each on some good bread, have toast with each, etc. It will be the whole experience that has improved, not just the taste.