Why Don't We Say "President" Before "Obama" and "Bush" Anymore? Where's Our Respect?

When did we stop saying "President" before we say Obama or Bush? It doesn't matter which party you support. It shows a lack of respect for the office.

Bush and Obama both have titles
We show more respect to stars, idols
It makes me crazy
That we're so lazy
Don't worry, I'm not homicidal