php framework vs just php?

honestly, i never used any framework to do my coding. i look into few popular framework like cakePHP and codeIgiter. I did learn the tutorial but still decide whether to use it on my next project. the thing is, i already develop few working library. no matter how hard i look into it. i always find it is easier or simpler to work with just php code and it work just fine. simple code and i think faster than using complicated php framework. i target my code to use specific server configuration. the only advantages of using framework is cross server version (i don't need it). since everyone out there talking about framework. i still prefer using just php. i just wondering whether i am the only one thinking this way. anyone out there still doing php without using framework?