Why Are You Staring At The Mountain?

This is a good reason.

According to the USGS, Mount Rainier is the largest volcanic hazard in the continental United States, chiefly for one big reason - lots of people live below Mount Rainier, and if it erupted would have at most 45 minutes to get clear. Lahars from the 14,410 ft high mountain would travel all the way to the Puget Sound - through Tacoma.

This is not a reason not to live there - with that kind of view, who wouldn't want to live there?- but it is worth taking a few minutes to figure out what you would do if worse went to worst.

For More:
Mount Rainier - Learning to Live with Volcanic Risk
Cascade Volcano Observatory - Mount Rainier