I did this once and the resulting message was incredibly depressing so I don't think I would do it again. For me there is no value or point in engaging in such actions. It's probably only worth it if you have a positive outlook on life.
I was wondering too what I would use this for. I'm a bit worried that this would become a depressing exercise if goals or hopes do not come true. And boring if they do come true. I think I'm just not sure yet what a sustainable way to use this service is.
Also I wish you the best and hope your outlook on life gets more positive.