There's the whole science of reliability engineering behind it. Contrary to popular belief, properly installed and lubed rolling element bearing don't wear out, they fail randomly.
The biggest cause of failure in bearings in general is improper installation, with being dinged from hitting them into place and skewed alignment the main culprits. That's why you never replace bearings as 'preventative maintenance'.
So anything you can do to ease installation is worth doing. The main ones are heating the outside/cooling the inside so less force required to get it in place, along with jigs to push or pull them in squarely and applying the pressure to the correct side of the bearing (i.e. never push on the inner to get the outer to seat) - jv
