That's a generalization. With that in mind, older workers are NOT preoccupied with sowing their wild oats. Yes, they have been there and done that and not everything is about "Me...Me...Me." They may not let their employers take advantage of them, but do things willingly. The time they don't spend with personal cellphone calls, IM's, etc., make their higher wages a bargain. Oh, they've learned enough in life that they don't make generalizations. But for you, I've made an exception.
It maybe a rare exception, but where I work it's almost the exact opposite. The older guys are always on the phone, or getting coffee, or smoking, or just yakking with each other. They won't do anything unless it will get them OT. Also, most of them seem very pre-occupied with the going pay rates at other jobs.
Like I said it might be an exception to the rule.