Macbook air 2015 logic board

i have been facing this issue for over 2.5 years with my macbook air. My laptop keeps shutting down over and over again. Got my logic board replaced 2 times. Each time I go to the apple store all they have to say is the logic board is faulty and has to be replaced. If I gotta keep replacing my logic board once every year whats even the point! Does this macbook air have a faulty logic board or the laptop is defective. I expect a new laptop rather wasting my time on giving my laptop for repair every year. just so frustrating!