The issue of magnet strength is an important consideration depending on the specific project you are using magnets.
Wild as it may seem a magnet can be too strong for an application, such as door stays or product holders.
A magnet that is too strong may cause a more forceful close than necessary. It can also make opening more difficult.
If you are holding up an item in a cabinet or on a wall, you want just enough power to securely hold the item but not so much that it is difficult to remove, or worse, it is so strong that it attracts other metal objects in the vicinity.