Would you like to live 250 years
I think living a life which lasts for 250 years would be a nightmare. First of all, keep in mind all the explaining you will have to do. Another thing is that you will not be able to surround yourself with other people without them finding out. Those argument work if you are the only one with the ability to enlengthen your life by about 170 years. This ability seems nice but, in my opinion, life would get boring and irritating. The chance of happening something terrible in those 250 years is much greater than in the span of about 100. So, to summarize, I would never choose the option to live 100 years.