Is using Kratom a sin?

Hi everyone. I frequent this sub but decided to make a throwaway for this post.

Anyway... I'm 18 and still live with my parents while I'm working from home as a somewhat successful programmer. My parents are very conservative Christians and I am also a Christian, albeit with some slightly different worldviews than them. But that's a story for another day. :)

I've struggled with some depression for 5 years now that wasn't getting much better until I found Kratom nearly a year ago. I only use Kratom like once every 2-3 days so as to keep myself from getting addicted or anything. All it does is allow me to see the world from a more optimistic perspective. Then, the next day after I use it, that more optimistic perspective always stays with me.

Overall, I've made great strides in my life thanks to this substance, and I really don't see it as a problem. It's way better than wanting to just stop existing like how I felt before. Now I feel like life is actually worth living!

But today my parents found my Kratom and were absolutely shocked. They were saying things like "all this time, you have been sinning!" and my mom was just sick to her stomach in tears. They think this stuff is like heroin or something and that I'm going to overdose on it. If you don't know already, Kratom is extremely safe and it is nearly impossible to die from it, unless you mixed it with a cocktail of other much more dangerous drugs. They "looked it up" and were only looking at the bad stuff about Kratom, and how it is a "legal high". Don't get me wrong, they were somewhat loving with the way that they confronted me, but I just don't know what to do. Everything I refuted to them about the dangers of this substance were just dodged and ignored.

I'd try to move out or something but honestly if I can get this resolved somehow that would be amazing. I really love my parents, and love having their company. I wanted at least another year with them. But I also need to think about my own mental health and well-being.

What do you think? Do you think using Kratom is a sin? I really don't know what to do in this situation. I'm torn and very sad right now. I guess I just needed to vent.

Thanks a lot, guys.