Nothing wrong with an old bike, if it's in good shape.
I've got an 81 Virago 750
Runs great, very low miles. Not really interested in paying what they want for a new bike, and won't buy a used one since..well..I Got a used one
750 Vtwin does ok for me.
Looks like this one.
Easy to work on, shaft drive, plenty of power, stable and comfortable bike. You can find one for 900-1200 in very nice shape.