Well I'm not sure, I've never used a DSL before, but if it takes better pictures that's what I want. I'm okay with changing lenses if I need to. I want to take outdoor pictures, animal pictures, and maybe some potraits. I'll most likely download them to a computer, but might take some to Walmart to be printed. And I'll read the directions
If you've ever used an old film camera with interchangeable lenses, a dslr is essentially the same.
Now that I know what you want, I have to be honest. If you think the big cameras are expensive, the cost of a good lense is going to blow you away. And yes, there is a difference in lenses. It's like comparing cheap dime store reader glasses to super nice transition glasses. The quality of the glass makes a world of difference in the outcome of your photographs.
With that being said, you CAN take fantastic photos with cheaper glass as long as you know what you are doing. For example, here are a couple of photos I took with my cell phone
Knowing proper lighting and what your camera is capable of doing goes a very long way.
I would suggest trying out a dslr and a few lenses before you spend a lot of money on one. There are several reputable online camera rental companies that you can rent different kinds of cameras and any sort of lense you want. The one I used was borrowlenses.com. also when you decide on which one you want, look for a dealer model for sale. You can get it so much cheaper that way. That's how I bought my last professional camera. I got mine from Adorama.com.
And @theoldchick was right, you should invest in lessons of some sort. Even basic ones will have you starting out in the right direction.
I hope that was helpful. If you have any other questions don't hesitate to ask