No horses do not love to jump hurdles and they carry on jumping when their rider is thrown because they are herd animals and they follow the other horses. The grand national is not what horses enjoy and the nearest thing to the natural instinct for them is flat racing. I owned an ex-race horse and i also know a top lady in horse rescue who despaired about the grand national and the cruelty that does occur and of course there is a huge amount of money involved, so, say no more. I agree with shysal the jockeys have a choice, the horses do not! Everyone is so upset about the jockey who rode the national winner, who was air lifted to hospital today but not about the horse that died. Time we stopped it I think, why can't we just have flat racing? 
The King's Speech To Announce 'All But The End Of Leasehold System' System'
To be really irritated by chefs over praising their own food?
