On the question of whether bear repellant is needed or not, a waste of space or not, here is what I have to say about it.
I fully expect that I will end my TransAm trip and will not have ecountered a bear, thus will not have needed to touch the bear repellant. Therefore, I guess when I'm done I could jump on the bandwagon here and declare that Bear repellant is not needed and a wast of space. After all, I didn't need it, people told me I wouldn't need it, and I haven't heard of a TransAm bike rider being attacked by a bear before. Silly me for wasting my space carrying bear spray that was clearly not needed....
But, I also fully expect I will end my TransAm ride and will not have crashed and cracked open my helmet...I expect no big truck will pass me, throw up a rock, him me in the head and leave a large dent in my helmet....I expect I will not fall over/off my bike and crack my helmet against the ground. In fact, I fully expect I will end the TransAm and may think....A helmet? What a waste of space...those things are not needed. After all, I've been training for this trip since last September, wearing a helmet every ride and have never really needed it.
But then again, you don't really need something until you need it....right? So, for all you brave people who ride and camp in bear country and have never needed bear spray, by all means, feel free to not carry it--leave your helmet and anything else you've never really needed at home as well. Me...I'll waste the space and carry my bear spray ;-)
For anyone who may still be on the fence about bear spay, take a look at this....starting around 9 min. When I listen to him talk and then imagine myself camped at Jenny Lake in my tent at midnight, reflecting back on this thread, I think I'm not going to mind that extra weight of that useless bear spray at all.
https://youtu.be/a0a5aVRtaSEps...if you like good bike touring videos, I would recommend watching all of his videos--they are really good.