I returned to committed cycling about two months ago. I bought a Specialized Sequoia Elite w/ all the usual clothes and accessories. Got the riding position dialed in. Gearing is 52/42/30 in front, 12/27 in back. As to the "motor", I'm 6'2", 200 lbs., 66. I never ride less than three times a week, more if work permits. Average week is about 5-7 hours of riding.
I love it, and on the flats at least, my strength and endurance is improving. I recover more quickly after a hard ride, and my average speed, while still low by many folks' standards, is creeping up. But the hills still kill me, beyond a certain steepness. The hill that leads to my house from one of my favorite local rides is one I've never gotten to the top of. And avoiding steep hills in southern California really limits my riding options.
So what's best to do--keep building aerobic capacity and leg strength on the flats by riding longer and faster and more frequently, or spend more and more time sweating my way up steep hills until I get better at it? I suspect I'll get different answers from superbly fit members than from others, but all advice is welcome.