Adventure Gaming is a Lifestyle!

It's Just A Hobby
With the internet and the popularity of streaming video, viewing people (sometimes actors) playing adventure/role-playing games "live" has become popular entertainment. Online play, organized play, appearances of the game in popular media (Big Bang..., Stranger Things, etc.) and the nostalgia factor all contribute to awareness of and interest in the RPG hobby. Thus the game we play is today arguably more popular than ever. So much so that I might get away with calling it "fashionable". At least in some circles, to say "Yeah, I play D&D"...or at least to admit to watching it being played may mark you as "in the know".
Does this mark a corporate ideal? Is this becoming the effect of "a brand"?
So a gamer tee-shirt and enough knowledge of the game to drop some d20 vocabulary into everyday conversation gets you pop culture cred? Game nerd is hip? (Hipster nerd is a thing?) Where is this heading? Can we call this trendy fashion a Lifestyle, like Harley Davidson or Nike or golf?
What about the gamer who lives in his mother's basement (we all know him) and despite the fact that he is 40+ years old and has no apparent handicap, is not now and never has been gainfully employed? Is he a lifestyle gamer? What about those of us who have been playing the game so long that it adds up to over half our life having been spent pursuing the hobby? Are we "lifestyle gamers"?
What is the difference between hobby and lifestyle? Businessdictionary.com defines lifestyle as:

Lifestyle is expressed in both work and leisure behavior patterns and (on an individual basis) in activities, attitudes, interests, opinions, values, and allocation of income. It also reflects people's self image or self concept; the way they see themselves and believe they are seen by the others.

In contrast "hobby" is generally defined as "an activity (frequently) done in one's spare time for fun". I suppose for some of us it is a hobby and for others it is a lifestyle. For a few it is employment. Perhaps it is a matter of degrees? I am wondering now where I fall in this continuum from hobby to lifestyle?