Agree arjay.
That is what I understand also by talking to my partner's girlfriends. They want farang husbands who are about 10 years older than them. And for that reason - that they are likely to be more mature, financially secure and responsible.
What I cannot fully understand thou is that these girls are all about same age as my partner (38ish) so surely a farang their own age of 38 to 40 is at that mature age. Or perhaps the other thai thinking kicks in that thai girl at 38 is past marriage age so they look for older husband thinking that nobody their own age will want them. One of them is one of the most beautiful, elegant and cultured lady I have ever met, and I tell her she could have any farang she want but she still want older farang. I tell my partner that if she not find farang, then I very, very happy to have her as second wife but then mention of knife and "I chop you" and I quickly say "I joke you"
As for the age thing in relation to love. We are in Chiangmai at moment and I see a lot of real old geezers (70, 80) with beautiful young thai girls. No way in hell is this love. One only has to look at their interaction in a resturant. Old geezer just about falling face first into his Tom Yum Goom and thai girl looking bored and cleaning up after him....but to each their own.
As for us there is 11 years between us. First trips to Thailand had all the sweet beautiful young things I could handle, but when it came to settling down with thai lady, looked for thai girl that was mature and intelligent. And what I have found is that some of the best thai girls out there are the ones in their late 30's. And most know that it is bloody difficult to tell some thai (asian for that matter) girls age with many in their late 30's and early 40's who have looked after themselves still looking like 25 year olds.