Frogs in captivity are quite long lived (with proper care), so be prepared for a long term commitment. Average life spans are typically 4-15 years, although some have been known to live longer.

Keeping their enclosures clean can be a lot of work. Many frogs have fairly simple light, temperature, and humidity requirements, but they are very sensitive to contaminants and waste in their environment.

Some people find them boring - some of the smaller frogs are quite active. However, many of the larger frogs are quite sedentary and don't move around much.

You need to handle insects to feed most frogs. Some of the larger frogs will even eat pinky mice.

It can be difficult to find someone to care for your frogs if you plan on traveling at all (keeping in mind you could have your frog for years, you may eventually need someone to look after your frogs for a significant length of time).