Am I "lame" if I don't go clubbing or partying?

I am 20 years old. I don't go clubbing or partying. I see a lot of my friends putting a lot of pictures on Facebook and instagram of them partying and clubbing. On the other hand I am about to enter my 3rd year in my business degree currently in summer school to speed things up. I work part time with 2 jobs one as a senior office administrator of a music school and working with a real estate agent. On the other hand my hobbies include constant going to gym after work or uni and photography.

Hence I ask this question because my life is so quiet. My friends on the other hand are often drinking, smoking, smoking weed, getting trouble ( getting into fights in the clubs or after clubbing by random) and strangers who want to fight. They also don't have a direction or goal in life.

Should I even be worried that my life is so quiet? Often I feel excluded as well because they never include me in their outings to these sorting things... And yeah is this a good reason as to why I don't have a girlfriend as well?
Am I "lame" if I don't go clubbing or partying?
Post Opinion