It may be a beautiful and ethereal magic covering every branch and every blade of grass, but as snow continues to pile up over the course of a winter, homeowners must make adjustment (and exertions!) to prevent damage or inaccessibility to their homes. One splendid night alone can see the accumulation of several feet of the white powdery stuff, leaving roads impassable and people snowed in. Emergency digging equipment and personnel must emerge to help clear pathways for regular traffic and commerce to take place and for business to begin again as usual.
However, it is unlikely that a big bobcat will come up your driveway. Chances are, even if you can emerge from your home, snow has piled up against your garage door to the degree that opening it would be either impossible, or a bad idea. Imagine pulling up the garage door only for several feet of snow to go tumbling into your garage! Not only is it harder to clear out snow from among your garage things, it can also damage your car, tools, bikes, whatever, when allowed to avalanche over like that.
In addition, allowing snow and ice to get caught between where the door is and where it closes may actually set off the sensors that tell the garage door to reverse while descending to prevent harm.
So if you've been visited by a few feet of snow in the night, be sure to completely shovel not only your walkway and driveway, but all the way up to your garage door as well, lest the snow and ice melt and re-freeze, binding the door to the floor.
If ice dos get caught somewhere detrimental, you might think about pouring warm water over it until it melts. Be sure to re-oil anything that needs it, as well.