Honestly I learned without any lessons and I love it. Maybe I might have learned it quicker with lessons but that didn't push me to quit.
That's the biggest mistake though. Your friends are not you and some people get frustrated quicker.
The fact is if we could get every beginner to take lessons at the start, the drop out rate for snowboarding would be waaay lower. I see a lot of people get frustrated trying to figure out riding sideways and end up moving to skiing because it's easier to stand.
Not to mention how learning without lessons typically causes huge bad habit problems later, but that's a whole different issue.