I don't think Bing is better than Google but I do use their webmaster tools and I submitted my sitemap today to both bing and google both. Bing is definitely a good secondary option to search engines. However yahoo isn't that bad either. I actually prefer yahoo as a secondary search engine. They've been around a long time.
If google paid id use it more, however google is tied into just about everything now a days with social media and what not, and they cant pay me to search.. pfft... what about all those adsense checks to cringy youtubers, instaspammers yuck!
i use many different search engines depending on what im trying to find. im researching random stuff all the time that peaks my interest. so depending on exactly what i need ill use: google, bing, yahoo, and once in a blue moon ask.com, and maybe fire fox sometimes. it really depends as they all excel in different things, primarily i will use google.
I keep hearing Bing is better, I should just default to it one of these days but since Google has a lot more data for it, I think it gets me better search results since I often look up local area things.