No. You will not become "addicted" to your glasses if you wear them all the time. If you are near-sighted enough to need glasses, it is best to wear them all the time. If you are far-sighted or just need reading glasses, you may be able to wear them occasionally but may notice that you see better if you wear them more consistently.
Old wives tale. It is a general feeling that wearing glasses will make one dependent upon them. Glasses improve the vision and the satisfaction of seeing clearly makes one want to wear them for that assistance. Glasses make no structural or physiological changes in the eyes, so they do not improve or worsen the basic vision. Wear them if they will help.