I'm brand new to lifting, so I don't know most of those, but it's interesting to read the responses. But I do know 2 and 5:

2- Running made my legs smaller AND stronger. But if you do it to an extreme, you do get really skinny. Cycling made my thighs massive though.

5- The real one I wanted to answer. This is absolutely not true. You can eat healthy VERY cheap- cheaper than eating junk actually. But it requires that you learn to cook and that you have the time to do it. Also the initial investment (spices, oils, kitchenware etc) might be expensive at first. My diet is protein rich and very healthy. It's about eating fruit that is in season or on sale, eliminating most drinks (water, unsweetened tea is plenty), mostly eliminating dairy which is expensive though I do eat cheese, purchasing whole grains and whole legumes, limiting meat to maybe twice a week, and cooking/planning ahead of time. Learn to use a pressure cooker. You buy grains and beans/lentils in bulk. Learn to spice them up or soak them so they are easy to cook overnight. Avoid wheat and rice and go for the longer lasting grains (pay attention to the glycemic index). Veg, bulk grain and bulk legumes are very cheap- they make the core of our diet. Then the money that normally you might spend on dairy, drinks, and bread, you roll over into fruit and meat. I cook three or four days a week and cook enough for the rest of the time. It's extremely cheap. Once I took that "eat on what you'd get for foodstamps" challenge, and I was so far ahead after just two and a half weeks that it became absurd to continue.