The importance of having automated backups cannot be overstated. The simple fact is hard drives fail. Sometimes the data can be recovered, perhaps at a cost of up to $1000, and sometimes the data is lost.
DropBox can be used as a simple and cheap or even free (2GB) solution for syncing your important files and pictures across all of your devices.
For a more robust and secure solution, I suggest IDrive with plans starting as low as $70/year* for 2TB Personal Use, $99/year* for 250 GB Business Use, and even a free starter option for personal use with 5GB.
*New Customer Discounts Available (up to 50% Off – Limited Time Offer)