Yes, I have taken LSD many times and there’s always a feeling of a deeper understanding of everything, how everything is connected, how to solve problems, etc. After coming down and examining the thoughts I had while tripping, none of my thoughts are actually insightful or profound at all, LSD just makes it seem like they are.

Still, I really enjoy that feeling, along with the visual and auditory effects of LSD and enjoy taking it a couple times a year.

Perhaps the experiences that others have had spark true insight, but not in my experience.