I am leaning towards emulation right now despite having a rather large collection of cartridges:

With emulation my cartridge collection is meaningless though as all the Atari ROMs are readily available for free. The controllers are key though. If you want to play with original joysticks and paddles you will need to get a thing that coverts the nine pin connections to USB. Now you can just use a modern video game controller for the joystick, but with paddles, driving controllers, etc. you are out of luck without an adapter. Some say the adapters have a slight lag to them which seems to be a huge deal, but I have never used one before so I do not know.
Or I could buy a new console (not overly pricey) and hook it up to my modern TV. Then the controllers would work perfectly of course, but I would be limited to playing only the cartridges that I have (which is a lot so it is not a deal breaker). The thing about this route is that the Atari was not designed to work with a modern TV and the picture quality is not always great. It depends on your TV and the specific game you are trying to play. Some things look great, others do not.
Maybe I will try both routes. Either way I need joysticks and paddles so those will be bought soon. I read that all of the new replacement joysticks are poor quality and break so I will be buying original joysticks. Original paddles too as nobody makes replacement paddles.
And the 2600 being introduced in 1978 is a 1980s thing to me as I first had one sometime in the early 1980s. Does anyone else have fond memories of the Atari?