I do get a nice buzz when I want to, but its also handy if I'm busy cause I can take a good puff or two and continue what I was doing. I don't think its much of a throat hit anymore, I even prefer somewhat restricted air flow so I feel it more.
I do have lungs like airbags. .... hits, smoking other drugs, and breath holding competitions are to blame I'd guess.

(Don't worry I quit drugs before I quit my two packs a day)