Files can easily get lost if you do not have good protection on your site. Some of those files may be saved on your computer and easily replaceable, but what about the rest of them? If you lose the first time to them, where are you going to description get them out of again? Especially fix wordpress malware protection is very important. Long-term sites have a good deal of data and have created a large number of documents. Recreating all that are a nightmare, and not something any business owner would like to do.
No software system is immune to bugs and vulnerabilities. Security holes will be discovered and bad guys will do their best to exploit them. Keeping your software up-to-date is a good way once security holes are found, because their products will be fixed by software sellers.
Keep control of your online assets - Nothing is worse than having your livelihood in the hands of someone else. try this Why take chances with something as important as your website?
Note that this last step for setups should try. You have to change all the table names within the database if you might like to do it for existing installations.
These are More Bonuses three things you can do to maintain WordPress safe without plugins. Set a blank Index.html file in your folders, run your web host security scan and backup your entire account.