Hi Devonlady,
We foster too. I would agree with the comments above, children's experiences can sometimes make them determined not to get close to you, but this can also be highly rewarding! You need to be absolutely stable and in control of your own life to do it, so that you can have a bit of perspective when things get tough. However we've loved it!
We chose only to do emergency and respite foster care, ie, regular weekends for a handful of kids and then short-term placements in crisis situations. We (through choice) do not have children of our own and we did not want to lose out on the freedom that this can bring. By taking on emergency and respite placements we can still choose when we just want to potter around the garden, or to have a glass of wine in the evening. It also re-charges your batteries. However, we did accommodate a young lad for four weeks and he remained with us for eight months! Needless to say that once we knew what to expect from each other we fell head over heels in love with him and it was tough to say goodbye. But he found a permanent home with carers who would meet his needs very well and he is now very happy and reaching his full potential.
Fostering can also be highly entertaining! Not all children come from 'bad' families. For instance, some have come from kinship care placements with grandparents who can no longer manage. The differences in children's experiences can be fascinating and it's a subject that our friends and family never tire of hearing about.
Hope this helps!
Lynn