No. Immortal is the wrong word. Any time spent at a Catholic institution that's worth its salt (even its liberal salt) will drive those thoughts clean out of anybody's head. We knew our bodies were not immune to death, that eventually we would succumb to time, but at least our souls would live on. So no, I guess we never thought we were immortal.
Perhaps we thought that we were invincible.
Yes, that's a better word. Our youth was celebrated in beer and cigarettes; mozzarella sticks that should have come with free an angioplasty; drugs that expanded our minds and shut out others and excess. But why shouldn't we? Society has told us we can stay young forever, that the distant future of adulthood was only that - distant. Our health was the least of our concerns unless it was heartburn, indigestion, bronchitis, or mono. All of which prompted the nurse practitioner to ask us ladies "do you think you could be pregnant?" because pregnancy is the cause of all known ailments when you're in college.
So we thought we were invincible. At least we did, until Abby's panic attacks turned into the possibility she might need a pacemaker. Gerry's indigestion turned out to be a heart attack. Scott's flu was viral meningitis, MR has cystic boobies, Maggie's hip is falling apart, and my platelet levels continue to confuse my dear sweet hematologist (who moved my appointment from April to March and prescribed some folic acid. Another pill to take in the mornings).
These are not ailments to befall on healthy adults in their 20s. Hell, they shouldn't even befall moderately unhealthy adults in their 20s. But Abby and Maggie are having surgery and Gerry has shunts in his heart. I'm not allowed to get into any serious accidents because internal bleeding at this point would most likely lead to death (not that I would be allowed to get into them before).
We're in our 20s and we're dealing with stuff that is farther than our years. Our health insurance, which we scoffed at before, is now what's saving our wallets. We don't need anything else on our shoulders - we already have a job market that's despicable, a war or whatever we want to call it, shaky politics, bills, student loans, payments, everything else.
Now our immortality comes back to us. Our invincibility is gone. We're left with insurance bills and medication. Welcome to growing up.