Being dead is basically the equivalent experience as not having been born. I'm not terribly upset about all the things I missed before 1977 AD. Not sure why I should be too worried about what I'll miss when I'm gone.
It's difficult to take a consistent position that holds both "I don't want to die early" and "I don't care if I die". It requires an arbitrary judgment on what constitutes 'enough' life.
Imagine a pill that gives you 10 years of good health and freedom from aging. No tricks, no evil genies, no monkey paws. It's completely free and universally available. It's not a one time offer. You can change your mind later as many times as you want. How many people would actually refuse that pill and choose to die at a 'natural' time?
Based on how much we spend on medicine, I'd guess very few, and that seems like a clear preference for being alive.
Completely untrue. Maybe as an individual, but your impact on other humans is the biggest difference. Particularly if you have children, there is no equivalence.
Are you fine with dying today?
We want to live when life is good, because life is good. If you are enjoying your life today, and want to keep living because of it, then you are going to want to keep living when you are in your 70's.
But you don't worry about it now, because you are young.