This is always an interesting topic.
I run scenes on a constant, consistent basis because I enjoy RP and my timezone makes it very difficult to attend scenes I like the look of (they start at, say, 4:00am my time, for example). So, I run scenes to remain active in the communities I join. However, because of the spotlight thing, my own characters are relegated to background positions which means these characters that I create and/or have to put in applications or be approved inevitably don't end up really doing much.
It sometimes gets to the point where I'd rather just be given a GM bit and let to go wild with NPCs and setting stuff because then I wouldn't feel like my own character is being kept under the stairs, so to speak.
The other thing about the idea that you can't run things for yourself, which is a good rule, is that it runs into issues. Let's say you're on a WoD game and you're playing a mortal detective. You'd like to do some journalism but no one is willing to run it - everyone wants to run Elysium things about the Clan and Covenant political maneuvering. So, what do you do? Do you just sort of ignore your character? Do you run a scene about investigating a spooky murder which is really just for your benefit? Do you page and @mail and +bbpost things until someone bites to run it for you, basically making them give up their time for your development? It's tough. Ideally, staff would be running things like this.
It's a huge problem when people just start running things for themselves because, soon enough, everyone is doing it. But I think it's also a problem when players have to rely on other players to run things for their own characters. I think it's also a problem when all charbits are expected to be Schrodinger's GMs - if I'm a detective, I might not want to also be the entire police department.