CBs are great, just ask this owner*
They might be slightly boring, compared to Nortons and Sportsters...but the 750 was the first superbike of its era, combining incredible technology (inline-four SOHC engine? NO WAI), comfort, and features that we take for granted like electric start, mirrors, disc brakes, and even frickin'
turn signals.
It was one of the first bikes to kickstart the Japanese motorcycle revolution and dispel the notion that motorcycling has to be fussy, unreliable (Britbikes, here's looking at you) or obnoxious (Harley's here's looking at you). They brought motorcycling to the masses - "You meet the nicest people on a Honda" - and thus were mass-produced to oblivion, which means parts will be notoriously easy to find.
In fact, Honda still makes many of the OEM parts straight from the factory, and great deals on eBay happen all the time. Many owners go for the 836 big bore kit if it gets too boring, and individual K&N carb air filters will wake it up at higher RPMs (which is what I plan to do). Aftermarket parts are still aplenty, and can be easily adapted to 750s and 550s if you're into some minor fabrication work.
And if you are, there's some fun to be had...
They're dirt cheap (a well-preserved one will be under $1500) and wrecked ones can be found in junkyards across the nation, as the entire series ranges over 2 decades 1969-1978 and even to today with the Nighthawk, an excellent starter bike if a bit spartan (front drum brakes? Seriously?).
Plus, you gotta keep me and
brockster company so we can share head-gasket-changing secrets.
*So what if I haven't actually ridden it in a year? Gimme time, dammit!