Firstly: the religious, legal and moral standings against suicide stem from the fear of death almost all people have, because noone faces their mortality. It's just an outward expression of an internal struggle.
Will suicide be more accepted? I hope not.
I believe every life is sacred and full of potential. There are very few suicides that aren't impulsive, considering that most suicides are based on societal and personal circumstances, they can't be anything but impulsive. Can someone actually stand there in full consciousness and say "My life isn't worth it. I should be dead."?
There's only two circumstances that would actually fit that bill. If the person was terminal and in servere pain, or completely unable to act, then it would be a wise and conscious choice to use euthenasia. If there was no hope of recovery, and the person could say "I can do nothing else while I'm here except suffer." then it would probably be better if they passed quietly, quickly and painlessly.
The other circumstance would be if someone had a complete and total, uncurable mental defficiency that caused them to harm others directly. I don't believe there is any psychosis like that, because with enough treatment and willpower anything can be overcome. It could be a long, hard and possibly mentally and spiritually agonising path, but if travelled the person would come out the other end renewed and redeemed.
What I would like to see is way more compassion being brought to those people that wish to die. We are all one humanity together, so for one of us to kill themselves would be like a part of a body just dying. It doesn't serve the body for healthy cells to be randomly killing themselves, and it wouldn't serve humanity for people to be killing themselves either. We are all here on our own path to learn, experience and grow. The depression that leads to suicide is caused when that path is not followed.