Some of these replies are just plain stupid.
Look its all part of growing up and taking responsibility for the things in your life. Part of it is simply that you would rather the money you worked hard for goes to your loved ones instead of kept by large companies, another part is that you would like to leave family members with a form of inheritance, albeit not a traditional one.
What about those who have family of their own, would you not like to know that if the unfortunate should happen, you have left your wife and children with some form of monthly income to live on?
Simply saying well I will be dead so dont care is extremely selfish and shortsighted.
To the op, the best option would either be a straight LLC + attached bank a/c which is passed on upon death, or if you own a few LLC's (or equivalent, such as in different countries) then have them all owned by a single trust, which would then be passed on.
Yes they can and are used for tax dodging, but as long as you pay what you owe/fully declared and they can see your using it legitimately, you shouldn't have any crap from the IRS.
Either way, everything should always be recorded in a proper, legally binding will.