They just give new possibilities. It does not mean everybody should use them all the time. It is up to you what you use them for.
One example: you probably used Layer Styles (gradient overlay, bevel and emboss ...) in the past. Now, these layer styles can be built into a font and used everywhere.
Also, you may want your letters to be constructed out of complex objects, you had to construct each letter manually in the past. like this, or this
They just give new possibilities. It does not mean everybody should use them all the time. It is up to you what you use them for.
One example: you probably used Layer Styles (gradient overlay, bevel and emboss ...) in the past. Now, these layer styles can be built into a font and used everywhere.
Also, you may want your letters to be constructed out of complex objects, you had to construct each letter manually in the past. like this, or this