About 2 weeks ago, I noticed that my almost 5 year young washing machine did not complete the spin cycle. After several successful loads since then it stopped working again yesterday and has not been spinning since.

When the washer switches from rinse to spin, it rotates the inner tub slowly, the waterpump stays on the entire time (normal??), but the tub is not spinning. I checked the belt and pulley and bearings, all look great. There is no loud noise or any smell.
The clear hose going to the level switch is not plugged
WORTH FIXING?
AND HOW