This used to be the main ride that we as a family went on in Magic Kingdom for the past few holidays. It was the main reason for visiting MK, but since about 2003, it has slowly declined to being a ride we go on simply because it's there.
Splash Mountain, is without doubt one of the better log flumes I've ever been on. The journey and story (like all Disney rides) is well thought and themed superbly. The mountain itself is still a major photo opportunity. But the ride has lost its novelty over the years, probably because we've done it lots now, and the Brer-Rabbit story isn't very familiar to us. That isn't the fault of the ride or Disney, it's just I've outgrown it, and prefer rides that still produce a wow factor.
Also it seems as though Disney don't do a massive amount to keep it clean, fresh or updated. The animatronics sometimes don't work and the music is sometimes fairly muffled. But the overall experience is good fun still. Just a shame I have gotten older and appreciate it less.