Yeah, this is a deal-breaker for me as well. Why can't I selectively push my photos up? There are a ton of photos I would never want synced automatically (multiple shots of one thing where I'm going to pick the best, normal shot vs Instagram shot, screenshots from my phone, images saved from email or the web, etc).
Not to mention I can't get into the apps settings without letting it start to auto-upload thousands of pictures to check if it's going to do it over wifi-only or use my data.