No. Do not open source it. Respect yourself and the work you have accomplished. If you have no interest of making a business from your code, you can give away the finished software for free. Then you can postpone the decision if you want to make it a source of income later in the future.

There are no benefits at all for you by making the code open source. There are no benefits for users either. The only people who benefit are huge corporations and a few open source fanatics who wouldn't even give you a glass of water if you asked for it.

If you want to benefit other people with your code and make a living from it, sell the software for an honest price. That way you attract quality users and are fairly compensated for your work.