Elegran
There are other sites where you just put in age and sex, and they tell you the average life expectancy of anyone who has already reached the age you put in. Obviously you are not going to live to a younger age than you are now, and the older you are, the older you will be when you die (duhh!)
If they are not asking any questions about current health, about smoking and drinking and other bad habits, and about diet, exercise and mental stimulation, then all you will find out is how old a lot of other people your age are when they kick the bucket or cash in their chips (not all - there might be some who lived to 110 and others who didn't make it to a birthday that you will celebrate in a couple of months - that is the problem with averages).
The only possible positive is that it might give you the incentive to sort out your will and burn the raunchy love letters from your secret lover before your "average" demise takes you off suddenly.
Agh....I did see one of those websites for telling expected age of death that was based on how old you are now!
There was me confidently thinking "83 is average age of death for British women" and then asking us to put in the actual age we personally are right now and they proceeded to add a couple of years on for me personally - agh!! Apparently the reasoning was that the unhealthiest tranche of us will have already died (ie my erstwhile brother was due to die sometime between 20 and 40 - due to the family heart attack problems - but he had a very young age heart bypass). Thus they seem to reckon "Well anyone that's lived on into their 70's must be in the healthiest tranche" and put up our expected age of death!
That's one they don't give any indication of on any table I've ever seen - what our "natural" age of death is likely to be. These tables are not very accurate in two respects I feel - 1. They don't give any indication of how many people have died "naturally at their given time" and how many people have had artificially prolonged lives. All three of my erstwhile family have had their lives artificially prolonged - 1. last I knew my erstwhile brother (5 years younger than me and in his 60's now) is still artificially alive (ie hauled back several times by "modern medicine"). 2. My parents were respectively due to die at my father in his 50's (heart bypass time) and maybe even before that from heart attacks - but was artificially alive until 93!!!! 3. My mother was due to die from pneumonia a few years before she did so and maybe of a heart attack she'd had some time before that - but was artificially alive until 93. They brought both of them back "from the brink" more than once. That's not counting the fact that they were both possibly due to die in the Lockerbie Crash back in the 1980s (as they were having a mini-break in the area at the time and my mother took it into her head they must leave that area early - the day before the plane crashed there - yep....she's descended from that Scottish clan that are known for having "the Sight" and so I guess she "saw" that happening and hence they came away before it did.
Me personally - I'm "naturally alive" in my 70's - and reckon the difference as to why I've not died yet is I've been eating healthily since my 30's. Yep...I groan loudly each time anyone refers to "eat healthily/do this/do that and you'll be healthy and live long" and I'm there going "Now how on earth do I get the first part and the first part only of that equation - ie I want to be healthy throughout BUT I don't want that to mean my life is extended". Do people like me get landed with an expectation of "reach 100 and get a telegram from the President"? I hope they've invented good natural antidepressants then if that's the case.....
I have a theory that those of us who make a reasonable effort to look after our health do get lumbered with long lives unless we've "done everything we came for" and have no people we wish to live on for and no Major Project left we wish to finish and so, hopefully, that'll be me off the hook for being safe from having a long life. I've done my Major Projects back in my 20's and 30's (when I was still an idealist).
My take on things in my own family is my erstwhile sister-in-law is the reason my erstwhile brother is still alive AFAIK. My father felt he had to remain "alive" for those extra decades - as his wife/my mother was not the worlds most independent person and I'm not sure how well she would have fared left on her own without her much more capable husband.