Alternative lifestyle, define and explain using some examples

Another "alternative lifestyle" of today that breaks a
previous social norm is non-traditional families.  Once, the "nuclear family" was
considered normal: a working father, stay-at-home mother and two
kids.

Consider the television progression.  Are you young
enough to remember The Dick Van Dyke Show or Leave it to
Beaver?  Even The Simpsons and Family
Guy portray this traditional family (although Family Guy
adds a talking dog and grown up baby, so that might be a bad
example).

Now families come in sorts of socially
acceptable varieties.  Two moms, two dads, unmarried men and women living
together, mixed races, adopted children.  Shows like Brothers and
Sisters, Two and a Half Men, or Will and
Grace portray non-traditional structures of what could be argued as more than
just roommates, but families.