I say go for it. I was dead set against getting a dog when we got our 7-1/2 years ago, now I love her above all other creatures. I can't imagine life without a furry companion. On the other hand, my son is grown and on his own (pretty much), so I don't have a kid to keep track of.
I'm a bigger dog enabler than I am a yarn, knitting needles, notions, etc., enabler.
That's Mr. Sissy to you...