I am still not sold on those reusable plastic bottles and how these are better for environment and health then regular soda bottles.

I use maybe one PET water bottle each month when i go for outdoor activities. PET bottle i would buy anyway even if i had reusable one, because i've got stuck somewhere without running water or because i craved bottled icetea or orange juice. After carefully rinsing it. I keep using it for month or so and then dispose it. I only use it for clean tap water. No sugar or anything that might promote unnecessary microbial growth. Non-abrasive rinsing. Store with lid off when not in use.

These are usualy made locally in soda bottling companies, so the shipping is cheaper and more ecological than shipping reusable bottles from one central reusable bottle factory (likely abroad). This makes me feel zero guilt when i finaly decide it's used enough to be disposed.

Quite often these are reasonably sturdy to be used for months if you keep them in backpack and don't throw them around too much. And the reusable bottles get damaged over time as well if you don't treat them right.

Reusable bottle people say something about how refilling that water bottle with water makes it leak BPA or whatever chemicals. That's just insane. I've seen huge grocery market chains storing pallets of those in direct sunlight for months, yet somehow magically that's not leaking enough to violate any regulatory limits. But me puting pure tap water into the bottle automaticaly makes it extremely nasty hormonal disruptor according to some people.

On the other hand, i would like to see some sensible regulation on amount of packaging materials vs amount of product these are holding. Shrinkflation and cost cutting caused some products to be ridiculously small compared to amount of packaging they need. (especialy when you realize the relationship between volume of product and surface area covered by packaging is geometricaly increasing the packaging to product ratio when shrinking down). Sometimes it kinda makes sense (pills/medications), sometimes it's kinda stupid (100ml water bottles - and yes, i am aware of airplanes and conference rooms).