It is a good idea. I'm fully accepting that building a computer is NOT everyone's cup of tea and I fully respect that. But once you build it once, there's nothing to it. Just make sure that you are static-free and work in a static-free environment. So a carpet or rug would not be a good place to build your computer. The small static shock is small to you, but it is a lot for those components to handle and they are easily fried.
For the most part, if you buy quality components (and they are a bit pricier than crap components), but their products usually just work out of the box. Less defects and problems down the road.
The steps to build a computer and get it up and working are small and easy.
1. Plug in the 24-pin motherboard power connector from the PSU to the motherboard.
2. Plug in the 8-pin CPU power connector from the PSU to the motherboard.
3. Open the CPU tray on the motherboard and put in the CPU. No force should be required or else you may damage the pins. Only hold the CPU by its sides. Do not touch the pins. The CPU only fits in ONE way. Wiggle it to make sure it's secured and then close the tray. This part does require a bit of force.
4. Install the CPU heatsink.
5. Put in one RAM stick. Doesn't matter if you have more than one. Just start with one.
6. Plug in the power switch cable that your case comes with. Refer to your motherboard manual to find where the power switch goes into. It will tell you.
After that, you can hook up a monitor to your motherboard and plug in the power supply and try booting it up. You should be able to get to the BIOS. If you do, then the hard part is done. The rest is to add in additional RAM, add in HDD, install OS, and install graphics card. The GPU can be last because it's not vital in getting your computer up and functional.
So as you can see, the steps are rather short. It's a bit of a learning curve to find where things are and what all the cables are. If you have any questions, you can always ask here. Someone can easily guide you through the whole process.