In my case I have tried to stick around and share what I can with others - but as I am not a daily visitor (and wasn't before either - although admittedly more regular) usually all the questions I can help with have been answered and I think I'm not needed!!! Also this is the first forum I ever joined and I still find it a bit weird communicating with all sorts of people on thoughts and feelings (and have found my occasional foray into sharing thoughts not respected!), I don't have facebook or any other social networking sites and don't intend to - so I tend to stick to help where I can - hence not very visible.
On the age thing I am a British female and my Filippino husband is 7 years younger than me...not a huge gap, but demonstrating that we are all different - the CFO hadn't dealt with a guy for a settlement visa before, but I'm sure you guys know of someone!! This is also a reason for difference, he doesn't want to go shopping so can't empathise on those issues!!!
Keep at it all!