I have a mid-production 2001 with 55K on it. I have replaced the cam cover gasket once about 1,000 miles ago. I had reused this gasket at least three times without issue. Use an allen key on the cam bolts. Do not use a ratchet, over leverage will pull the thread.
I have had ZERO electrical system problems. The original Battery lasted 2 years...it got killed because I marshmellowed the battery by leaving the lights on all night. The second battery lasted 8 years. I am on my third. I have no cold weather problems...the bike spent the first 9 years of her life in NY without issues.
I have replaced spokes once, and relaced the wheel once. This is known issue with early bikes and newer bikes dont suffer from this nuisance.
The Bonneville is a well engineered durable machine with superior reliability.