Although "all experience hath shewn that mankind are more disposed to suffer, while evils are sufferable, than to right themselves by abolishing the forms to which they are accustomed," organisms have been known to alter our environments to suit our needs, rather than suffer them even to our deaths. For example, when it rains I often open an umbrella.
Perhaps with the right anti-depressant cocktail, I wouldn't bother.
Based on what I've seen in nature films regarding how great apes (chimpanzees, orangutans, etc) react to rain, and the extreme aversion to being rained on that I've anecdotally seen in several different cultures, I have a suspicion that an aversion to rain--particularly to unwanted/unexpected rain--might be not only instinctual but peculiar and specific, similar to our aversions to spiders and snakes. Or maybe not, but it has definitely stood out to me.
If you don't need to change your environment (assuming mental health is the only reason to do so), why is it a problem that you won't have the inclination to do so?
The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.
As explained by the nihilist Caterine Vauban (Isabelle Huppert ) to Albert (Jason Schwartzman) and Tommy (Mark Wahlberg) in I Heart Huckabees: "It is inevitable that you are drawn back into human drama: desire, suffering...." https://youtu.be/9EilqfAIudI?t=85 Pretty sure it's a riff on the traditional themes of Dharmic religions. (Not unique to them, though.)