DPP does not support the same photo adjustments as Adobe Lightroom. If you want Adobe LR, then purchase it. Many users feel that DPP does a better job of rendering Canon RAW files into JPEGs than Adobe LR. I cannot disagree with them.
The best photos need the least amount of post processing. Less is best. If your photos tend to need a lot of cleanup in post, then I might take a critical look at how I take photos. This is not say that post processing is a bad thing. It is a good thing. I am just saying that it should not become a crutch.