I disagree with a few of these replies so I'm going to chime in. First, cameras don't become irrelevant after 6 months, a 5 year old DSLR will still take great photos. Good enough that if you put it in the hands of a good photographer you would never know the difference between the 5 year old camera or a shot from a brand new one. Second, don't buy a point and shoot, if your trying to upgrade from your phone there is really no point. The point-in-shoot is not going to give you much better results then your phone. A lot of phones now days can shoot in RAW and also give you manual settings. What the phone lacks is removable lenses, every photographer will tell you to invest in glass, not bodies. Removable lenses will give you so many more options from wide angle to telephoto, it really is a must if your trying to take photography seriously. Learning how to shoot in manual might be a bit confusing, but if your trying to improve your images then this is the route you have to take. Also don't underestimate the importance of mastering your post processing, invest in the adobe CC and use lightroom, it will make a huge difference (if your shooting RAW), RAW means not JPG, do not shoot in JPG you will loose a lot of the dynamic range if you do. With RAW photos + lightroom or photoshop you can pull a lot of details that would otherwise be lost in the shadows.
The best way to take better photos is to look for good light not for good scenes. A boring scene with good light will produce a better image then a great scene that is poorly lit. Light is king, and it is the most important factor, look for the light first, then find the best scene within the light. Adjust your settings to save the highlights and recover your shadows in post.