Ps4 is not friendly to mods, so will most most likely never recieve them. Microsoft is a little more open to them, so there is a chance you may see some in the future.. As for whether or not mods are illigal, that's still a bit murky, but laws are slowly opening up a path to removing restrictions. A supreme court case a few months ago found that if you purchase your device or content, you own it and are not restricted with what actions you take with them. You can research it yourself, but here's a video that explains the ruling and some of the current restrictions.
Hope this helps explain it a bit.
It's not remotely silly to want to own what you purchase, and change it how you want.