Not sure this is always true. My cat seems to give me a funny look and has put more than a run or two in my stockings. Not sure what that means!
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I wasn't sure from reading the OP whether this was a custody situation or just an opportunity that you would be alone with your son. If it were custody I would say definitely don't do it because while it does not have to be an issue in a custody situation frequently it is one. In any case a 15 month old might be very active crawling around and so forth so I don't even know how much time you might have.
I posted the same question myself on a different CD forum 5 years ago with the same intent as the original poster. Its good to get a range of opinions and I am glad I got the same thing when i originally posted. Ultimately its your decision.
I know my attitude about this had changed from the time before I had kids and then after and I would definitely consider that when you evaluate some of the inputs you have gotten. You can never truly say what you would or wouldn't do with your kids until you have them.
Good luck.