I used to take 60 at 160 pounds. According to your experience I must've been tripping balls when in reality I just felt my heartbeat a little stronger than usual. But don't take my anecdote as evidence.

If you say that 30mg is too much, find scientific literature that supports this claim. If you compare those 30mg to different maximum doses, you'll find that that's significantly below what's generally considered safe. Additionally, this meta analysis finds that those limits are not scientifically motivated and some patients might actually benefit from higher doses.

I have no idea what happened to you. Maybe you have some condition which makes you have unique side effects. But the world does not revolve around you. Your experience is far from representative. I found nothing about states of ecstasy or intoxication online. I did find reports by people abusing MPH at a >10 times higher dose and not orally. I can totally believe that they were high from that.