I ride the MBTA all the time. I even rode it two days ago out to Framingham for CSX railfanning. I also ride Metro North once a year. Sadly I have had only one ride on Amtrak. NEC 3 months before all electrification. At least I rode behind a F40 from New Haven.
The only Trains iv been on are
Washington DC METRO
And MARC.
REALLY WANT to go on Amtrak