But unlike wOBA and wRC+, OPS and OPS+ are a lot more simple to understand and interpret for the casual fan. I bet you can't give me a layman's term explanation for either of those stats that i could explain to, say, my litle brother, who can certainly understand OPS and OPS+.
Also, in reality, when valuating OPS, because SLG is always, by definition, higher than OBP, the real value of a point in OBP is about 1.2 SLG% points. Mathematically speaking.