Peer group yes,but peer pressure no. The bottom line for me and I suspect others is that we and I put myself in this group are pre disposed to addictive activities whether that is gambling, alcohol, food, smoking, drugs and or angthing else that is addictive. Having that first cigarette is just the tip of the iceberg. We took it because we wanted to try it.
we have addictive personalities and it could have been alcohol if we had been older.
that is my humble oppinion anyway and to say peer pressure is to try to lay the blame at someoene elses door rather than my own. I pefer to take full responsibility for my own actions even if I was only 12 when I started. No one forced me or put pressure on me to try a cigarette. maybe for others it was different.