There is undeniably an audience that uses Bing exclusively. Whether that is due to just rolling with their default browser/search engine on their new Windows machine, or actual preference, I really don't know. What I do know is that you lose access to a significant chunk of your potential client base if you don't advertise through Bing. That alone makes the platform completely worth using.
The UI is pretty vanilla, nothing crazy going on, but there is no need to reinvent the wheel on a digital ad buy platform. Bing Ads manages to create a solid user experience without directly ripping off AdWords.
Advertising is considerably cheaper than advertising on AdWords, primarily due to the lower exposure and the fact that fewer companies use Bing to advertise.
Much like AdWords, display advertising is a black hole for your budget currently. A vast majority of the clicks generated are unactionable, and very few actually convert. So while the low cost and high click rate may be appealing, it very rarely leads to anything that converts.
The Ad creating wizard leaves a lot to be desired, and the analytics are relatively lackluster. Overall, Bing Ads is a great platform if you just want to make sure you're in the headspace of people searching on Bing, but very little else.
Do not import your AdWords campaign and call it a day, there are subtle differences that have to be manually accounted for between the platforms.
Bing Ads generates leads that would have otherwise never seen our brand.