Pokémon Fruits & Pokémon Vegetables

Why is it not okay for me to simply work on something I'm excited about? I'm working on this concept and I'm getting the same type of responses I got before. Why is it wrong for me to work on my project? Why am I not allowed to be hopeful that my project will become official? I need a little hope, right now, and apparently I can't have that... This is exactly why I posted here and not on other social media. These same kinds of responses. Just let me build the concept, instead of telling me every reason it's going to fail. Please, just let me have my fun.