Effects of daily morphine use

[obbn]

Hello Everyone,
I realize that this is a question for my health care proffesionals, but when asked I don't ever seem to get a straight forward answer. I had 3 major back surgeries and lucky me, I get to have massive chronic pain for the rest of my life. Because of this I take 60mg of morphine everyday along with a few percocets for breakthru pain. What is the long term effects of taking morphine every day for years and years. Right now I have been taking it for 8 years and since I am 44 I figure I have atleast another 30 years of being on it. I do realize that the effect of the drugs will decrease as I become tolerant, but what about damage to organs etc...
Second question. I play poker a few times a month and miss being able to have a beer or two with the guys during the game. I mentioned this to my doctor and he told me that as long as there was a few hours between having a few drinks and taking the morphine (usually taken at night) that it would be okay. I had 3 beers over the course of about an hour and a half and amazingly didn't get a buzz, nota, nothing. I found this strange as I hadn't had a drink in about 7 years. I figured one or two beers would have me about passing out. I figure it is due to the fact that the morphine use has made me immune to the effects of alcohol. I also am immune to novicane, I have to be put out to have dental work done. I am assuming that this is also due to the morphine use.

Thanks in advance1