If you could become immortal on the condition you would NEVER be able to die or kill yourself, would you choose immortality?
If I could remain healthy, then yes. Absolutely. There's going to continue to be cool things to see and do and I don't want to miss out on the future because of something as stupid as dying.
I can't imagine seeing my beautiful children age, I don't even want to think about enduring more loss. I am happy with this life, I want it to be long and filled with love and end when it eventually needs to. If I can't bring everyone with me then immortality is not for me.
No, in our current state we'd still decay into a bed-ridden state and then live the rest of that for eternity. There's zero chance for a happy life, with that one stipulation.
If you said that you'd never age any further, then yes.