Wife here:
I have discussed this with friends and here is my take. When we are out on these daily hikes, I sing to my son, I talk to him about what we are seeing, and we listen to the birds. It is a time we spend "conversing".. I talk to him and he babbles back to me. Ear plugs would end that.
There are so many "what ifs" when you have a baby. Sometimes I think I shouldn't take him out hiking at all.. what if I fell and he was crushed? My mom-friends lecture me constantly about how I jeapardize the saftey of my son by being in the outdoors all the time. I plan to bundle him up and take him out cross country skiing with me this winter. They think that we will have a dangerous crash or be stomped by moose. Maybe, but I am still going. We took him camping when he was two weeks old. Oh my, did that upset EVERYONE we knew. He was fine, he was happy. Yes, there are many dangers out there. During that same camping outing there was a grizzly on the other side of the river from us. I won't let fear of what could happen stop me from living my life to the fullest. When he is a little older he will be roaming the woods by himself. Believe me, my motherly "overprotective" hormones kicked in the day he was born and I have to let my good sense battle those fears everyday.
I don't think the bears care to tangle with me anymore than I do with them. Most encounters are easy to avoid. I have two dogs that crash through the woods and should alert the bears as to our presence. I head home the minute the dogs smell something that gets them barking. And I will probably never need to fire my weapon, but i will continue to carry it just in case. I don't know all the right answers, I just try to do my best to be a good/smart mom.