I switched auto insurance companies back in April (2011)

Is there any reason why I would need to keep my bills from the old insurance company? 

I hate holding on to trash, but at the same time, I always file away all important documents (just in case).

I see no reason why I would need to keep bills from my previous insurer. Am I right?  Or is there something I'm missing?

Whether it is important to keep or not your insurance bill, I think there is no harm in keeping those documents. =)

Like what our admin informed about the importance of keeping it thinks at the end of the day it is better to keep them on your files to track your payments and can be helpful in the long run.

maintain your records so you can track your expenses over the years, it can be usefull when you're doing you're annual shopping around.

I agree with the admin, it's important to save your insurance paperwork for your records.

If it's just the clutter and excess of paper that is bothering you and you have yet to go paperless – try scanning them to your computer so you can start keeping electronic records.

Be wary that your hardrive could also fail, so backups are recomended (in paper or electronic form).