Relatively boring I mean. It has been studied in quite a lot of detail now, so the mystery is gone. Titan on the other hand... we got a tantalizing glimpse of it through Huygens and there's still so much to find out. It's a far more interesting destination, and Huygens already proved it can be done.
Forgive me but that just sounds a lot like layman 'speculation', which has no place in real science. "I'm bored of this so we shouldn't do it any more."
There's extremely good reasons for exploring Mars, it's the prime candidate for a (previously) habitable planet. It's also the closest. Such a great pairing, and yet we've still barely scratched the surface. We're learning new things about it every day. We can never be 'done', and we're definitely not 'done' because somebody on an internet forum said they were bored of it.
If you want to design a lander that has a low enough mass to be launched from Earth to Titan, but has enough scientific instruments to make useful readings, a reliable way of transmitting information through the atmosphere and on top of all a heatshield capable of protecting such a craft and making it come to almost a complete stop from among the highest speeds ever achieved by a manmade object them be my guest. Serionly.
And don't get me wrong, of course the outer planets are beautifully tantalizing. But it's not a case of either/or. There's physically more we're capable of doing on Mars, and we need as much intel as possible on what is quite clearly the next big step in manned space flight.