I rode the train from Salisbury Mills/Cornwall for about 15 years and never minded it. For most of the years, I worked in the East Side of Mid-town - Third Ave in the mid-40's. Actually, walking distance to Grand Central Station. Other years I worked in the vicinity of the World Trade Center (until 9/11, that is) and also on the West Side in the Thirties.
I'd get the train from Salisbury Mills, ending in Hoboken. Transfer to the PATH to 33rd and walk to Third & 42nd. (Never needed a gym membership in those days!

)
The bus is another option, though I find the quality of ride on a train is so much better then bumping around in traffic on a bus. Just my opinion; lots of folks take the bus from Orange County to NYC on a daily basis.
And tons of folks commute by train from here. Given that I worked so close to Grand Central Station, I did try commuting from Beacon. While it was great to get off the train and be just a block to my office, I found that I didn't enjoy getting off the train and still have to drive 15 miles. While the trip can seem long when taking the train from Orange County, it's sure nice to get off in Salisbury Mills and be within a couple of miles of home.
So do not hesitate - come on up and try commuting from here. Sure, it will be an adjustment. But it's a senic ride and once you get into the rhythm of if, you'll find there's lots of friendly folks on those rails.
