I vaguely recall Saab2000 once saying that flying into LGA was a bit like threading a needle because of how complex the NY airspace is. Being a nervous flyer, that always stuck with me. My rational reason for not flying into LGA is there's no direct flights from SFO, at least on my preferred airline, Alaska. The other airport I would think twice about is Burbank. It requires a pretty steep descent due to surrounding mountains, and the runway is relatively short, iirc. Years ago, a SWA 737 skidded off the runway and narrowly missed a gas station.