...he was not a good instructor.
Are you sure?
Your pre-existing phobia could still be lurking in the hollows of your mind.
Plus, some of us, are not suited for driving and it doesn't matter who is teaching. When I made the attempt, it was kind of a mix of comedy and terror. (the instructor felt the terror, not me).
1) tended to forget about the rearview mirror
2) made a turn and crossed 3 or 4 lanes of traffic in record time...I sliced across at an angle.
3) tended to stop in the crosswalk. Well, that's better than the intersection ain't it?
What is the reason? Many people live without an automobile their entire life.
....and have you looked into things such as insurance, car maintenance, gasoline cost?
At any rate, whether it would be worth it is unknown. You might find a nice vehicle which somebody who doesn't drive is just trying to get rid of.
For example, an elderly person who never did learn to drive and their spouse just passed away.
Or maybe someone who is moving to another country due to a job transfer and won't be able to bring the auto along.
Whichever car you might want, bring it to a reputable mechanic before plunking down your ducats.
Additionally, check the Kelley Blue Book @ www.kbb.com
I hope you have success in this endeavor.