That was just a personal estimate, obviously if the battery health is for example at 75% you also lose 25% of 'the time' to work without plugging it in... so if that becomes a problem when traveling i might want to buy a new one. For others this might not be a problem of course.

Ok. I was wondering if the breakeven is set as 5 years but if the cycle of tilt to full makes the life shorter for the battery, then it may not be worth it. I agree that if I've to weigh battery life vs my time, I would go with the latter.