Older cars didn't have computers, but they had ignition systems that could fail in subtle ways without any way to determine the failure other than to test each component with a multimeter or feeler gauges.
Is that ignition problem the coil, plugs, plug wires, condensor, points, some random wire leading to/from the coil/condensor, etc?
A modern ignition system is simpler in my view. You have fewer parts and most of those parts talk to the computer which can deliver easy to understand codes. If you don't have a code reader, most cars can deliver codes via the CEL. Sometimes you have to put a jumper on the diagnostic port, others have a button you press.
I've worked at both ends of the spectrum. Not only is it easier to diagnose a problem on a modern car, you don't have to do it as often. The only downside is that it tends to be more expensive when you do have to repair something.
Chris