How much do you share in a relationship?

Probably not what you're think about so let me clarify.

My wife and I have been together some 20 years or so, married for the past 11. She feels that since we're husband and wife what's mine is hers, but not necessarily what's hers is mine. She feels she has right to any and everything I own. One of our biggest arguments is the fact that we both have our own vehicles. Since we started dating we had separate cars. Up until our last vehicle changes we never even exchanged keys to each other's cars. Now she drives an '09 Nissan Murano and I have an '08 Lincoln Navigator. When I got my SUV my wife was adamant about getting keys to it thinking she was going to drive it. The day I signed the paperwork on it she was sitting right there and when the guy gave me the keys and fob she graciously took one. A month or so later when she got her Nissan I made sure to get a key to that one. And to this day she['s probably only driven my SUV less than 10 times. Personally I think that if that' the car you picked out from a dealership or car lot then you should be happy to drive it since you're making payments on it. No, she doesn't just walk outside and decide which car she wants to take.

Several years ago, I was diagnosed with sleeping issues and was put on medication to help me sleep at night. All of a sudden my wife now has sleeping issues. This is a woman who when she gets in the bed and the covers hit her chest she's out like a light. Several years ago we were talking on the phone while I was at work and she told me that she took one of my "prescribed" sleeping pills. We're not talking about an OTC product. This is stuff you can only get from a pharmacy and I only get a certain number each month. Knowing that she now put my sleep, for one night, on hold so she could try out the pills to see if they helped her made me livid. We had a major argument that day. Not only did she not ask but she took someone else prescribed medication without consulting with her doctor to see if they were safe for her.

As a guy I have a number of things I use for personal grooming. One of which is my nasal hair remover. I ordered and have ordered a number of devices to keep my nose hair at bay. A few months ago I ordered one and it is working out nicely for me. I usually trim about once ever 2 weeks or so. The other night my wife casually told me that she tried out my nose hair trimmer to see if she liked it. I'm looking at it this way. That device goes up in my nose. I could have a cold or what have you and it's all in that trimmer. Now knowing that my wife stuck it up in her nose again makes me wonder, can I not have anything of my own. My wife has never been concerned about a stray nose hair and I told her if all she had was one hair, the best option was to pluck it with some tweezers. Plus the fact that my nose hair trimmer has been all up in her nose. Again, she doesn't ask if she can use it she just tells me after the fact. This is one of those "it's easier to ask forgiveness than permission" scenarios.

Do you share everything with your spouse or are there just some things only you use and there are some things only they use. Next thing I know she's going to use my razors and shave her legs or her. . .

Do you share everything?