I hate swallowing pills and getting needles. I never ever took a pill or tablet in my life 'til 40; and not because I hadn't been prescribed anything.
When I did seriously need to pop something, well I tried and tried and tried until I got the hang of it; it wasn't pretty but now it's not so difficult, but I won't take anything routinely, vitamins or non-prescription pain killers or any of that ****.
Same deal with the needles, if it's absolutely necessary I'll grin (or grimace) and bear it, but if it's not I'm out the door. The person giving it to me never ever knows how close they are to getting that syringe grabbed from their hand and thrust into their eye.
I'd be a terrible junkie.