I have always wondered. I like mature women because there are numerous reasons they are nicer and better than people my age. They don't have stereotypes, are more knowledgeable, and still look good. But anyway, I have considered 'cougar dating', but would a 30+ year old woman go out with a 19 year old? I am mature and so on but, would it even be possible, or is it a waste of my money setting up on a dating site?
I've dated upwards to 5 years. The difference really isn't that noticeable, other than priorities in life shift slightly and you meet at slightly different milestones in life. Eg. One might be focusing on uni whilst the other is well into their career.
The issue is only as big as you make it. Anyone that tells you otherwise is bull****ting. A lot of people claim younger/older people to be unsatisfactory in general, but they're almost always just too lazy/close minded to make a solid judgement of an individual themselves. Instead they make an assumption based on arbitary numbers.