To clear a few points up.
My ex left me and 9 months later I met a new relationship. At that time, me seeing my son was reduced to Saturday and Sunday, by ex's demands. There was no reason for me to stay living where I was, so I moved and still got to see my son on the weekends. During the start of the 9 months separation, I was paying child care costs £400 a month odd. I paid the child care so the ex could study. At the time, I didn't know that she was having an affair. I am not sure what a good solution would be if the parents couldn't agree before separating, though I would like to hope that the clarity at the end of the relationship counted towards something helpful and reasonable. One of the parents needs to have done something wrong, drugs, drink, DV, cheating, what ever.
When I moved to the new relationship, she suggested starting a divorce. Accept the ex didn't respond to anything and it cost me over a grand to get her into court, by order of the court.
I don't for a moment begrudge my ex leaving, in fact I am glad she left me. What I don't like was the flow of lies and many attempts by her to exclude me from my son's life.
At the time to separation, all the ex needed to do was say that she wanted out and how were we going to sort the finances out, child care out...etc. Ex knew she was in the wrong and she wanted more than what she could fairly agree to, so she moved, got herself comfortable (and pregnant by another bloke), then wanted to play happy families without me being in the picture. Her plan didn't work.
My ex did have legal aid at the time, which she used to help break court orders. I put a stop to her misuse of legal aid twice and she got it back 3 times. In the last 6 months, things have calmed down, though I am not expecting things to stay calm.
When I said that the money would be misused...I can use an example. A trip to France on a weekend that my son should come to me, then another trip to a theme park at the next weekend, forcing the child to choose between coming to me and not going on a trip. The France trip was a con in it's self. My son can go on the trip but no money (or hardly any) gets spent on him but other children can have money spent on them. The excuse to my son would be that I don't pay enough. While I am not opposed to my son going on any trips, the trips are planned to conflict with time when the court orders that he be available to me. Swapping is out of the question - the reply is a gobby - don't talk to me, talk to my lawyer or see you in court.
To add onto that point, I don't earn enough to be able to pay her much, some months I would have to pay nothing. I choose to stay in this position because funds would be misused. If the money I paid went to solicitors and just used on court cases only, I can now deal with that, I am LIP, but the money gets spread over anything that keeps my son and I apart.
Further, if I started paying and stopped, I have a double wrath, first for stopping something and second for not paying. At the moment I am just not paying and am prepared to get cloths that my son needs/wants.
If I were in Canada, I would take law into my own hands. I am surprised that they don't have more problems, but then I would think that the law is more fair on divorcing parents.