I think that it is too soon Liz.
I agree with you about the planning ahead and not wanting them to die in pain due to illness but they are not at that stage yet. You clearly love them and they sound like they are cared for and content so as Claire says if you can afford them and it brings you pleasure to own them then do that.
You cant ever really justify keeping animals as most of us do on this site if you quantify income against output. So whether its happy hackers, farm cats, working dogs, laid back layers or rare breed sheep, if we sat down and did a detailed cost / benefit analysis or asked ourselves what was the point we probably couldn't justify any of it.
I'm sure that if we took the same analytical approach to having children or getting married then we wouldnt do that either.
So the future plan for them is to love them, to enjoy sharing your life with them and to delight in the satisfaction of knowing that you were in the fortunate position of being able to keep them in your life until they reach a time when you know that the kindest thing is to let them go.
When we are old and grey, those of us who keep animals for pleasure will remember the animals that brought joy into our lives not the amount of money that we saved on the feed bill by having them PTS.
I hope you have lots more happy years ahead together.
[size=78%] [/size][/size]You will know when it's the right time. [size=78%]