Common? In that chart B is fifth from the least-common letter!
Anyway, perhaps it's just the words that I use. I hardly ever use the second letter of the alphabet, since I now am aware of each time I press the letter "B".
You really should start referring to it as something else then!
My friend had his 5 key on his cell lock up, which he found really annoying since he could only phone people in his book, and texting became near impossible. ghi turned out to be used far more than he expected.