"I don't like it, either." I wonder, is it necessary to separate those kind of words from the rest of the sentence by commas? Sometimes I've seen them written in that manner: "I am there, too."
And I agree with Setwale Charm, in that it sounds as if you could be saying something else in addition to such statement. For example: "I have moral reasons for refusing to wear a speedo. Also, I don't like it."