There are two (2) problems Macbook users face:-

1. The speed of a mechanical hard disk just kill us off! The more you store, the slower it gets! However, with Solid State Drive (SSD) is proven to improve the speed of an old Macbook with a mechanical hard disk by at least 10 times. Upgrade your Macbook with SSD will definitely to restore your Macbook To Its Original Performance, just like the first day you start using.
2. We are all greedy. We will never satisfy for less. Whether it comes to the portion of food, the money in our bank account or the storage capacity in your Macbook. Applications become heavier, MacOS system size getting larger, they store cache to improve the performance of the Mac. That, jams up our hard drive without us storing much of our own files. Upgrade Macbook SSD / Hard Drive To Fully Utilize Your Mac.