I don't know what the answer is to this issue. I would like to see fostering either treated as a formal job with the same rigorous supervision and formalities as you would expect in any childcare related career, and with the same possibilities to become more highly qualified and take on more challenging roles, or financial assessments carried out to ensure that no foster carer becomes reliant upon the fostering income to support themselves, and therefore under pressure to keep doing it when they may not be suited to the role.
I think, on balance, I would prefer it to be formalised into a job. Those who do it, and do it well, deserve to be able to say "I am a foster carer" and have that information received with the same level of respect and understanding as those who say "I am a nurse" or "I am a teacher". I think it is the fuzzy area between "job" and "calling" that creates the difficulties where money is concerned.
When I did my stint in family law, my supervisor specialised in acting for the children in disputed care cases and I met many wonderful foster carers. One lady sticks in my mind. We acted for a large sibling set (I won't say how many as it was an unusual case and I don't want them to be identifiable even though it was a long time ago) whose parents had abandoned them many times. The eldest girl went to the same foster carer on many occasions and at the time of the care proceedings this lady was investigating the possibility of adopting her. At that time, there was no support whatsoever for a foster child who was adopted. She had children of her own and had already adopted another foster child. They couldn't afford to lose the very minimal allowance that they received, and they woud no longer be able to foster once they had another child with them permanently. The poor lady was caught in the middle of an almighty row, being pulled one way and another. The LA didn't want to lose her as a foster carer but on the other hand they wanted her to keep the little girl. The court got involved, saying that it was ridiculous that no funding was available to allow the girl to have a secure home. It turned into a big row over money and the lady was terribly, terribly upset as she thought that she was being presented as being in it for the money alone. When the case finished, she told us that they had decided to adopt the little girl even though they were going to struggle financially and she would be going back to work, ironically at the time when she was probably needed in the home the most, in order to be able ot afford it.
Again, I don't know what the answer is, but I always felt that this lady was very badly treated in that case. There appeared to be no gratitude for what she was doing, and she was made to feel as though she was begging for money. If foster caring had been treated as a more formal job then she might have been better treated by everyone else involved as she would have been seen as another professional with equal input into the situation, rather than almost being lumped in with the children and everyone else arguing over their heads.
This was the best part of 10 years ago so I hope things are better for carers in this situation these days.