Yep, this is what worries me too. I'm a "relatively healthy person who exercises regularly." My impression of "mild" or "not severe" symptoms was ... Y'know, a nagging flu that would keep me from work 1 or 2 days in the past, or an annoying weeze and cough for a few days, "ah damn i can't play basketball for 2 weeks or go for a run..." sort of thing, or maybe "Eh, still got this lingering chest cold 10 days later..."
The truth is, "mild symptoms" can be body aches that make you bed ridden, painful headaches, chest pressure and asthma conditions, a persistent unrelenting cough, fevers into the 103+ range, breathlessness making it hard to talk, go to the bathroom, walk up stairs, get out of bed. In circumstances before I was in my mid-30s, these would be things I'd worry about but not be overly concerned over... "I'll be very sick for a few days." But I have a toddler. My biggest worry now is what happens if I wake up in the middle of the night unable to breath, my wife is severely ill, and we have a 20mos old. We can't call for help, my 70+ year old parents can't be exposed. My 40+ year old immunocompromised sisters can't be exposed. My wife is like Chris Traeger from Parks & rec... Her body is a microchip, finely tuned, in perfect physical conditional, but colds per her on her ass for days. When my wife has gotten sick in the past, I've always just picked up dad-duty, she'll sleep off the sickness for 1 or 2 days, then be abck at it, and I'll be primary care giver for those ~48 hours and then it'll msotly be back to normal a day or two later. When I get sick I'm usually the kind of person to shrug it off or not have it really disrupt me, like I'll be sick and not feel good, I'll go to bed at 8PM and try to sleep the whole night but ... with this, if I have lung duress, as someone who struggles with Asthma for my whole life, then... I don't know what we'll do.
I don't know what we'll do, and that's my greatest anxiety. It's the thing hanging over me.
At first I was a little caloused like, "Eh, if I get it, I'll quarantine for 2 weeks and get it over with, at least then I should be immune... We'll spend a lot of time on the couch watching disney+ instead of walking the dog..." but then I started reading first hand what the virus can do, and my mindset completely shifted... Like, I still have to carry my daughter up and down stairs, still have to change her diaper, still have to carry her to her crib, feed her, prepare meals, give baths, I have to be present with her.
ANd, of course, god forbid she gets sick. It's a mental headspace I'm not really willing to go.