Everyone going on about lung disease when you can just vaporize it or use edibles. Edibles are tricky since you can either add too much or too little so you get an unexpected high.

Vaporizing doesn't produce harsh carcinogenic smoke and it's the best way to consume cannabis IMHO. By not combusting the plant material, you use less of it to get high and it's better bang for your buck. You can make 25g of hashish last 6 months if you want to.