I agree, these guys deserve respect because they're still acting, even though their acting gets converted to something else digitally.
However I'm not a big greenscreen fan myself and love directors that refuse using them because movies that don't use it end up looking way more realistic. I'm talking about Tarantino and Nolan.
The realness of the movie is a little lost with greenscreen. This also reminds me of this: http://www.nme.com/news/film/ian-mckellen-filming-the-hobbit-made-me-cry-with-f-877575