Getting a magnetic clasp necklace is a real advantage as it will be much easier to put on. You are more likely to use this necklace as having the magnetic clasp means you can get it on without a struggle that you may experience with other clasps.
The beauty of the magnetic clasps for jewelry is that it is much easier to put on your jewelry especially if you are not so nimble with your fingers. There are many people who actually buy the clasp separately to attach to their favorite necklaces and bracelets to avoid the struggle in getting it on.
So, if you get a necklace you like with the magnetic clasp, it is like a bonus of getting an additional feature that you will find you like.