Drug Resistant Bacteria-- Intelligent Design?

Here’s another thing I don’t understand about Creationism or maybe it’s Intelligent Design. Does God decide to make a bacteria species suddenly resistant to an antibiotic for a reason? And if he does—why? Why doesn’t he make us resistant to environmental pollutants like Dioxin? Seems like a better use of his time and a lot more helpful. Creating a nasty bug like MRSA, which can make visiting a sick friend in the hospital downright dangerous, is not nice.

Don’t we have enough problems?