See, stuff like this is why I stay inside. The bears can have the outdoors.

The bears can share the outdoors with people. This story is light on details but bear spray is considered the best defense against bear.

I've camped many times in bear country and slept in a tent. I kept bear spray with me at all times and fortunately had no problems...knock on wood. Most of the time it is OK but you have to be intelligent about it. Don't leave food out, carry bear spray, stay away from bear as much as possible, etc.

Also, there are plenty of great outdoor places you can go that don't have bear. Not saying they're risk free, almost nowhere is risk free. But there are "safer" parks, etc. (not "safe", just "safer").

I would never want to be only stuck inside. There's too much amazing to see outside.

Bear balls! That’s what my wife and I use (along with bear spray and a 10mm). Little jingly balls you hook into your backpack. Now just walking makes a continuous noise.

Do bears not like bells? Wouldn't it draw them to you (like a dinner bell)?

Most wild animals don’t want random interactions with strange noises. They will avoid as much as possible. Grizzlies and black bears don’t usually “hunt”. I’m unsure how effective it would be with polar bears or if it would draw them in. But your prep for going to an area with polar bears should be not going to the area with polar bears.