uncfnp, Not arguing, just saying I'm 62 and they haven't caused a problem yet. My succeptability to swimmer's ear-- I think-- was when I was quite young and not using Q tips after swimming. Never lost a swab in my ear... figure since maybe age 20 that's about 13,000 uses. Again, I don't disagree with your points. People's physiology varies a lot.
Actually, I've been advised before that Q tips should only be used on the ear's exterior, as you point out. Have always been curious--what would one be cleaning off the outer ear?--wax, dirt? I just use soap in the shower for that and dry with a towel.