Something isn't right. First your comment makes no sense, since I was talking about long Island, why bring up Connecticut and Staten island. 2nd no one calls queens and Brooklyn long Island.
The western most towns of Nassau are barely under a half hour drive into the city and they all have LIRR stops.
East meadow, Levittown, North Merrick, Brookville, Manhasset Hills, ...
Just look at Google maps, turn on transit to see the stations, then count all the towns that ain't walking distance...
I do actually know what I'm talking about, having spent way too many hours in the freezing wind/rain/snow on LIRR platforms, chiseling ice off the car in the parking lot, and questioning my life choices. Try an expensive 2+ hour with multiple transfers for a month.
The western most towns of Nassau are barely under a half hour drive into the city and they all have LIRR stops.