For me, your question needs to separate orgasms from ejaculations. I can orgasm many times and not ejaculate.
And even when I do ejaculate, the orgasm I have a couple of minutes later is much more intense and long-lasting than the one that accompanies the ejaculation. I once orgasmed from inserting my fingers into the lips of her pussy! The sensations just flooded over me and I had a very intense orgasm. It might have something to do with my feminine internal feelings and sexual associations.

So, my answer is I never have to consider having only one orgasm.

__________________
Wonderfully Surprised with the New Pixies!