Permanent life insurance

Looking for feedback on a viewpoint I'm having. Starting to believe my monthly premium in life insurance is unnecessary. I have viewed life insurance in the past as a solid protection for my family in the event I die. My children are in college now, my house is just about paid off, and I have no debt (beyond that mortgage). I have built up a retirement nest egg and feel this would provide enough should I die and no longer need to spend the large amount of premium spend every month. I'll be 52 this summer - just feeling like I'm over-insured. Thoughts???
I would say that if your children are grown and moved out, and your home is paid off, and you've got a decent nest egg....then, yeah...you might not need insurance (or as much insurance).
The one question that comes to mind is about your retirement nest egg. If you were to pass away next week, would your spouse be able to access that nest egg? Would there be any kind of financial hit?