Public transit to New York and/or Philadelphia is pretty much non existent where I live. So, we need to drive to get where we are going more often than not.
That said, we've enjoyed train rides in Europe. Went from London to Leeds which was a nice ride, then Leeds to Manchester and flew from there to Dublin. Also have rode the train from Glasgow to Edinburgh and back which was also relaxing. I really wish we were closer to trains, unfortunately, we usually have at least a 30 minute drive just to get to a local train to a point from where we can transfer to Amtrak.
For MBTA Commuter Rail, The Salem Station is 8 minutes drive north of me, and the Swampscott is 7 minutes drive self. I always drive to the Salem station because it has a parking garage. Swampscott has very very limited parking. Most downtown people in Swampscott walk to it.
That get's me to Boston North Station. Unfortunately since the Big Dig, the North / South Rail link was severed. It was supposed to be moved underground / under the highway in the tunnel, and they put all the provisions in it. But they cut it at the end of the day after being way over budget. For the last 20 years they have said it would be too expensive to ever see the light of day. But over the last 5 years there has been movement and there are proposals for the 2040 to 2050 decade to actually make it happen. Maybe 50/50 chance right now.
Why is this link needed? Currently commuter Rail either dumps you on the North End or South End of Boston. Not in the city. And there is no connection between the North and South End stations, not even by subway without 2 or 3 transfers!
The North South Rail Link would create some underground downtown stations, and directly connect the North and South stations. This is clutch for say me traveling to New York. Currently I would have to take the train into North Station, and either get out and walk for an hour, otherwise take the subway with multiple transfers which could still take an hour to get to South Station to catch the Amtrak train to NYC. It's not ideal. And actually, timing wise makes taking the first Amtrak train out of south Station in the morning impossible and taking the last train at night home impossible because you can't make your connections. Thus you have to drive or be dropped off at South Station which is what I have had to do every time I went to NYC for work. The first train out of Boston (Acela) at 5:30 get's me to NYC by 10:00am. The first MBTA train get's into Boston around 5am. A half hour is simply not enough time to get to South Station from North. If the North / South link existed it would be less than 10 minutes and you would stay on the same train.
In MBTA territory, pretty much every town/city has a station with a few exceptions and you are within 15 minutes of the closest station. The issue is, MBTA is commuter oriented and everything is focused on getting you between your stop and Boston. Actually using it to travel to other destinations is a pain in the ass if it's not on your line. Because that means you have to go to Boston to transfer. And if you transfer is not in the same Boston station (North or South) you need to get the other station.
In addition, over the last 40 years there has been a heavy focus of moving the stations out of downtown areas and to parking garages for commuters. This means if you go to any other station on your line or other line that's not where you parked or Boston, you are pretty much SOL without a car. Downtown is usually not walkable from most stations. And this is a issue a lot of cities are starting to recognize and want their downtown stops restored to increase foot traffic.