Nobody knows how long a rides life cycle will be. Obviously people will have opinions based on problems the ride has had in the past. It is obvious that Slammer has had a lot of downtime and it has cost Thorpe Park a fortune to keep in operation, that's something we can all agree on. If Thorpe Park find a suitable replacement that would be much cheaper and reliable for them, keep the guests happy and the costs low then I'm sure they'd replace Slammer. For now, Slammer is a fantastic and unique ride experience and we should enjoy it whilst it lasts, because nobody actually knows for certain how long it will be.