I do not really know what to think about your post. I get it, that grand kids are special, but none of this sounds healthy to me. I am not sure kids should be going everywhere with you I don’t think that is healthy or good . Kids need to do kids things they need to be with other kids they need to be playing. There is no mention of parks or kids activity in your post expect swimming . It sounds like they are tagged along to whatever you want to do. Also, surely, they would be going to school anyway so they couldn’t go everywhere with you.
Also, its sounds to me that you are putting your needs and wants before theirs. What do you mean you have invested so much in them what do you expect back? We give love unconditionally we do not invest, that suggested getting a return.
Yes, it is a big change but they are not your children and surely you would want them to be with their parents and live their lives You must want them to be happy.
I am not sure if the is a fake post but it is full of red Flaggs. Maybe you are a little too possessive and that has prompted the move? That is not a very kind thing to say but you sound a little overwhelming to me. I would not dream of expecting my grandchildren to be there for my own needs and to keep me company or come everywhere with me. I love them I have a relationship with them but I also have a job, friends, and my own interest.
I think you need to wish your family well and stand back and let them live their live any way they choose. You havent lost them, you can skype them, call them and keep in touch via social media, mail and email, you can also visit .
They havent died, you havent died, so as you say you are being selfish look for positives such as what a great opportunity for these kids and be happy for them.
Also maybe give your wife some attention if you have one, a
I think she should be your world.