When my last parent, my dad, passed away 2 1/2 years ago, the only will my brother and I could ever find was one drawn up in about 1961 in California. The attorney we worked with said it was basically no good anymore, but that the laws in this state are easy to work with. We had no hitches at all. Only reason we would have needed one was if either of us decided to be difficult and contest what the other one got, which didn't happen.
The only reason this has come to my mind at all now, is my wifes' dad passed away the day after Christmas(bummer!). The family has been trying to get them to update their will for a couple years now. Their mother lives in Las Vegas, and owns homes in 3 states, with a pending sale on one of them. That'll be a real mess to take care of if she passes away without a will.

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past MB rides:
'68 220D
'68 220D(another one)
'67 230
'84 SD
Current rides:
'06 Lexus RX330
'93 Ford F-250
'96 Corvette
'99 Polaris 700 RMK sled
2011 Polaris Assault
'86 Yamaha TT350(good 'ol thumper)