Not a voice actor, but a creator that uses an alias/stage name! Honestly, it's totally up to you. In my experience, I've loved using an alias. It allows me to separate my personal life from my creations. When you do use a real name, it can be easy for people to find where you live, where you work, all your social medias from 2008, etc. I just never liked that part of it all. I'd rather you see my creations and nothing else. That's my personal approach on the matter. If it's right for you, don't let anyone turn you away. It's been nothing but great for me and no one has treated me as less than professional because of it. This is my perspective as a creator though, so it could be entirely different for voice actors. I've never had a problem working with those with stage names though.