Just so I'm clear here, you read "the most euphoric nights and best memories of my life" and editorialized that into "depressing"?

You're inserting your own disdain for weed here. That's fine if you don't like it, but it's not like he gave any of the gory details for you to actually make this assumption. If you said "I love eating salmon" it would be poor form for me to say "Your description of your eating habits sound horrible".