You cannot isolate from the world for 6 months, stay indoors away from fresh air and sunlight, killing ALL bugs, getting no exercise, and expect your immune system to fight off a minor cold, let alone a virus like flu or covid.
At the end of all this, washing your shopping, wearing masks, 2m distancing - will NOT save you. Your immune system is the ONLY thing which WILL save you - and I'm astounded that the 'scientists' are not pushing this more.
And while we're at it - use the saved, wasted time to try boosting your immune system
Well, thanks for this insight
but some of us have autoimmune diseases which changes the odds. I'm not interested in killing 'all' bugs, just this particular virus. Personally I take high dose Vit D3 (I measure my blood levels regularly to make sure I don't get too much), as I get precious little sun due to being largely housebound, but I do get plenty of fresh air out in my garden, am trying to improve my nutrient levels but some aren't good due to my various food intolerances. I'm working on all of it.
'Boost your immune system' is a bit too vague a message for the general public, I think. I'm far more aware of mine but for most people, if they feel healthy they probably think it's fine.