You are most definitely the bane of my morning and evening, you are:
Nobody likes me.
Nobody ever comes to see me just for fun.
I'm nobody's hobby.
People are always trying to avoid me.
While the great (enter your nationality here) road can be enjoyed when it is wide and open, when it is full of cars, it is not fun. You can take a leisurely drive at night, a fun road trip, etc, but no one goes to the roads eager to sit at lights or behind other cars. In fact, people often turn away from backups if they have the chance, and new routing systems can actively subvert heavy traffic.
Yet every day people come to me.
They spend precious time with me
Though they could usually avoid me.
After all, you usually know where I am.
Every day, people (like me!) commute to work on the road, where they spend far too much time to get where they are going. Other forms of transit could help you avoid road traffic, in fact, you could avoid it almost anywhere-anywhere that isn't a road.
But don't think I'm evil.
I'm legal in all 50 states of the union
(though I only exist with any frequency in some of them).
I'm not addictive, not in the least.
Traffic occurs on roads, because roads are in every state, as are the citizens who need to get to work. In Montana, not so much, in LA, New York, Chicago- ouch. You don't get hooked on traffic, you want to get away from it.
The hint makes it look like Irishpanda's answer is closer. It seems we were at work on our keyboards at roughly the same time.
Whatever the answer really is, please
Don't make me drive home tonight...