I find that I had alot more to talk about when I was younger, perhaps because I was involved in more activities to use as talking points. As I have gotten older my life activities have dwindled down into a set routine, of which there is little deviation, and not alot of wiggle room to talk about anything beyond the rudimentary small talk about work, the daily news, etc etc. My technique for conversating with my fiance is simply being an active listener, because she is quite verbal, picking something from what she says, and asking or expanding on it, and then relate my own feelings to it. Usually results in a lasting conversation.
Personally, I think modern technology has eroded both the art of conversation and the english language period. People don't address emails properly like they would a formal typed or written letter, and net-speak ie lol, lmao, iirc, u, 2day, and so on has taken over.