I don't fly as much as I used to, but I always found LGA to to the most convenient of the three NYC airports. I've never cared about shops (Really! Who pays those prices anyway?) and rarely about restaurants beyond coffee and fast food. (Also overpriced.) I think the only restaurant I have any sort of pleasant memory of was up in Montreal (Dorval). I want a short walk from the curb to the gate, and a quiet place to sit and wait for the plane. That's it. I doubt if I've ever spent more than a total of $5 leaving all the airports I've ever left (excluding currency exchange). I just want to get the hell out. LGA's fine. But flying taxpayers don't count.
ML/NJ
I've been flying into Palm Beach International for more than 40 years. It used to be a great airport that had everything I wanted: picked up checked bags from a cart at the curb, and then crossed the street to pick up the rental car. When I returned the drop-off was in the same place. There was a comfortable place a short walk from the check-in which was also close to the curb and the departure gate.
They had a "great" renovation about 25 years ago. Now the rental car places are miles from the curb, so there are those little buses. Check-in isn't too bad but then it's a long walk to the departure gate, to be sure past shops I never go into, but it's a long way compared to 20 (?) years ago. (And forget about the absurd roadways they spent mega-money on to get to the "new" airport.)
ML/NJ