Yeah - big difference in reliability between the modern bikes and the old stuff.
Nostalgia's great - I often lust after my old BSA Gold Star or the Speed Twin I had in the 70's, but truth is, every time I went out, I wasn't sure if I'd get back again without bodging up some kind of fix.
Now, as we said, the only thing I take with me ordinarily is a cell phone and some breakdown insurance, and I've only had to use that for a rear wheel puncture. On long trips I relent and maybe pack some gaffer tape , cable ties and a leatherman, but to be honest, so far they've been dead weight.