Agreed with the OP.
Disagree that you had to be a kid when JP debuted to feel it is a special film. I was in my early 20's then and certainly a kid at heart. I felt fear during the film, laughed at the big pile o' crap line, enjoyed it tremendously, despite its differences from the novel.
FX and actors are top-notch. John Williams' music bowled me over, I never thought he'd capture the JP-ness like he did. I tire of listening to Star Wars and Raides themes, but the JP soundtrack is always in my car in case I need something during my commute.
anyway, I feel that JP drags a bit after many rewatches - when Ellie and Hammond discuss stuff over melting ice cream, I reach for the remote to FF.
Lost World has many awesome scenes, but I like it the least of the three. It is dull to me, with the worst scene I've ever seen in a film (when Ian's daughter, who was cut from her gymnastics team, uses gymnastics on conventiently placed roofing bars to kill a raptor ... I'm still shuddering from that). Actually I think the extended cut that appears on TV adds quite a bit of necessary scenes for TLW.
JP3 is a different kind of film. If you take it for what it is - a true summer popcorn thriller, I think it is quite nicely paced, often funny, and fun to watch. The character of Alan Grant just makes the movie watchable despite the others.