Please, no more online achievements please!

What is it with developers and online X-Box live achievements? Isn't it enough that I have already purchased your game? I want to explore your game in a manner which is comfortable with me. I want to achieve what you have set out for me. But I cannot do such things! I don't agree with forcing people who enjoy gaining achievement points to go online. It's presumptuous to assume that I even like to go online. I know it's just a different sort of hoop we are jumping through as players, but not all of us have premium memberships. Not all of us can even play online, so we are deprived of getting these achievements.