I've never smoked pot so I wouldnt know what its like. But I know how alcohol affects me....it makes me hyper then it makes me sleepy. No real harm in my opinion. No harm in my particular case I should say. I know that alcohol makes a lot of people angry and violent which is very very scary!
Lots of harm by alcohol actually. It's been proven to kill your brain cells, make you more aggressive, it contains lots of calories and carbs which for a 40 year old dude ain't the best thing for you, and it, like marijuana, is highly addictive. Except drugs make you look old and horrible and dependant on that ****. Whiskey is good though.