Is it normal that i don't understand why people would want to live past 60s?

You can go blind or deaf, become mentally ill or die when you are 20 years old. You can also be healthy and happy at 80 years.
Risk really doesen't matter to an individual.

Also happiness isn't defined by health. Or at least it shouldn't be.

I won't even live past 40 so that's only 4 more years left.

Sometimes it seems that too much emphasis is put on living to be as old as possible. Especially when it is reported as cause for alarm that your country is falling behind other countries when it comes to life expectancy.

Also, when you see medias report on some very old person having their 100-and-something birthday, it as though it is important in itself to get old. But aside from their reaching very old age, there is not always that much impressive about them.

The important thing should be to live well.

I think 60 is unnecessarily early, though. It is not as if the conditions you mentions begin at 60, and you can probably live healthily and well for longer than that.

Maybe because they want to see their grandkids?

you can live past 60 and be completly fine ... even feel youthfull... i know lots of youthfull old guys . you just have to take care of yourself for one and 2 just be lucky enouph not to get any shitty disease

If it was a choice between a higher risk of illness and instant death, I think most people would choose a higher risk of illness.

So they can be like the Golden Girls, duh!

I agree with your post OP

I would want to live forever maybe because I'm at a time In my life where i have not done everything, maybe because not being alive scares me