There are several reasons why you might want to increase the WordPress upload limit:

1. Larger Media Files: WordPress has a default maximum upload file size limit that may not be sufficient if you’re trying to upload large files, like high-resolution images, audio, or video files. Increasing the upload limit allows you to upload these larger files directly through the WordPress Media Library.
2. Theme and Plugin Installations: Some WordPress themes and plugins come in large file sizes. If the size of the theme or plugin ZIP file is larger than your current upload limit, you won’t be able to install it through the WordPress dashboard. Increasing the upload limit resolves this issue.
3. Backup Restores: If you’re trying to restore your site from a backup file, the size of that file may exceed the WordPress upload limit. To restore a larger backup, you’d need to increase the limit.
4. Bulk Uploads: If you’re trying to upload multiple files at once, you might hit the WordPress upload limit, especially if those files are large. Increasing the limit can make bulk uploads easier.

Remember, though, that increasing the maximum upload file size limit might put more burden on your server, especially if many users are uploading large files simultaneously or if your hosting service has specific restrictions. Always consider your hosting environment and consult with your hosting provider if you’re unsure.

If you’re trying to increase the upload limit in WordPress, there are several ways you can do it. Here are four methods:

1. Update Your php.ini File: The php.ini file is a configuration file that sets the parameters for your PHP on your server. You can increase your upload limit by accessing this file (usually located in the root directory, public_html, or etc/phpX.Y, where X.Y is the PHP version) and modifying the following lines:

   upload_max_filesize = 64M
   post_max_size = 64M
   memory_limit = 256M

After making the changes, save and close the file, then restart your server. If you can’t find the php.ini file or don’t have access to it, you may need to contact your hosting provider for assistance.

2. Modify the .htaccess File: Another way to increase the upload limit is by modifying the .htaccess file, which is located in the root directory of your WordPress installation. Add the following lines:

   php_value upload_max_filesize 64M
   php_value post_max_size 64M
   php_value memory_limit 256M

Save and close the file after making the changes. Note that this method may not work on some servers.

3. Change Settings in wp-config.php: You can also adjust the memory limit in your wp-config.php file. Add the following line:

   define('WP_MEMORY_LIMIT', '256M');

This increases the memory limit to 256MB.

4. Contact Your Hosting Provider: If you’re not comfortable changing these files yourself or if these methods don’t work, you can always contact your hosting provider. They can usually increase your upload limit for you.

Remember that these values (64M, 256M) are just examples. You can increase them as much as you need, but be careful not to exceed the resources available on your server, as it could negatively impact performance.

Also, always back up your website before making these kinds of changes, just in case something goes wrong.