Darn you, maverick! You pinched me in the birthdays thread, where I couldn't chase you down and get you back, so NOW look what you've made me do--come over here and start a whole new thread![mock-glower e]

Here's what started the chase: Have you seen M-W’s Word of the Day, Jackie? *EG*

AUGH! Maverick! You come here this instant! BOY do I have something for you!!! Oooh!

I did find vindication, there, though: Some critics dislike "orientate" because it contains an unnecessary extra syllable, but you can decide for yourself how important that consideration is for you. Personal choice is the primary deciding factor, although "orientate" tends to be used more often in British English than it is in American.
So, pppbbbfffttt, to you. [stalks righteously away muttering, "Gol-danged Brit-speakers anyway..."]