Until @galenkp is back on deck ill answer that question from my perspective. I'd prefer to eat just one thing forever then never taste again. That way at least im tasting something.

I'd want to live for an exceptionally long time. 1000 years maybe. But I'd want to die eventually.

I haven't cut my hair in ten years. i can easily live without cutting it ever. It only grows to a certain length mid back for me anyways so its not like it would ever get too long. It kinda takes care of its self.