It's not a bad analogy.
I will add this: the shape of the hill stays the same, and mostly that fresh powder will melt back into those old ruts... the changes that these experiences bring seem, to me, more about knowing the ruts are there then they are about changing things in our lives.
The change comes from the awareness of what can be done, because formerly "natural" things that are "just what people do" start to seem like artificial, learned behaviors. That's a powerful thing to grok, and easier to comprehend at the level of our nervous system with these substances.
I haven't found these drugs to be super "fun" outside of the non-recreational ways of doing things, but the older I get the more I enjoy things that most folks find exceptionally boring. But I do find them very useful.
For people who people worry about the long term effects of these things; I feel like for most healthy adults, if they "start small" the actual long-lasting effects are pretty minor.
Here's an idea to consider for curious folks: if one or two psychedelic experiences could fundamentally alter your views on your life, you probably ought to consider the deep things in your life more often.