Are outdoor WiFi extenders worth it?

Are outdoor WiFi extenders really worth the investment? I've heard they can help improve coverage and signal strength, but I'm not sure if they're necessary for my home. Do they work well in all weather conditions? How difficult are they to set up and maintain? Are there any potential security risks I should be aware of? I'd love to hear from someone who has experience using an outdoor WiFi extender to see if it's a good fit for my needs.