Some get that way. Others, not so much. Your senses dull, you know, taste and smell erode over time. 'Sweet' is slow to fade, so old people can still taste it, but the other nuances, less so.

[All right, apparently she enjoys Explaining A Thing to the youths.]

If only I knew, boy. Don't think it's something I've worried about in a long time. What about you? Did you appear here knowing, or have you discovered preferences among what's available?