I'm prepared to be told I am being!
I have a friend who for years does a number of things for the same charity, that she never bloody trains for.
The first one she did was a 10k which she didn't train for and walked and then got annoyed when the race organisers had all but packed up (small local 10k it had a cut off time she was about 29 mins behind).
Since then she's been a did not finish in the London marathon (again did no training)
Did no training and dropped out very early in the three peaks challenge
And so on and so forth. she is quite sedentary and keeps getting charity places in these events to motivate herself to do some exercise and never gets round to starting...
She's emailed me yesterday about an 2 mile open water swim she's doing in 3 weeks, asking for sponsorship. I emailed back asking how the training was going, and she's not done any as she's self conscious about going to the swimming pool 
Aibu to stop sponsoring her? It's not that Indont want to give money to charity but I don't want to encourage her constantly signing up for everything and anything when she has no intention of training and probably won't complete?