WordPress plugins are a great way to add extra functionality to your site, but before you install any plugins, you should be aware of the fact that many plugins are not free. In fact, many WordPress plugins are paid plugins, which means that you will have to pay for them if you want to use them on your site.
While this may seem like a bad thing, it actually can be a good thing because paid plugins usually offer more features and functionality than free plugins. Plus, if you find a plugin that you really like and want to use it on more than one site, paying for it will make it easier for you to do so.
In the end, whether you decide to use plugins on your WordPress site or not is up to you. However, if you do choose to use them, be sure to research which plugins are free and which are paid before you install them.