Welcome to the forum
I'm a convert from christianity to Islam and before I converted I was a heavy weed user. I gave it up in 2009 after becoming a Muslim and Allah turned my life around alhamdulilah. Now I'm nearly twelve years clean from drugs and alcohol and SubhanAllah even though I have a very quiet life I'm so much happier than I was when I was chasing after the drugs and the dunya
When Allah forbids something there is wisdom behind it. He created us and knows what is best for us. Don't look it was islam saying don't have a good time look at it as saying it doesn't want you to get hurt
If you are interested in learning a bit more about Islam then have a look at this site
www.islamreligion.com they have a bunch of good articles about Islam and a live chat q &a for you to ask questions.
Welcome again to the forum may Allah bless your stay here