The problem is that having total control over the world you are in is ultimately unsatisfying. Certainly, a few years, decades, even possibly centuries, maybe. But unless there are things outside your direct control for you to strive for, eventually anyone would become, to put it simply,
.
This is the attraction of reincarnation. Each time, one learns about the universe anew. One is given a chance to redefine oneself endlessly. The real universe, and everything we do, has an essential meaning to it. If you save the entire surface of the O'Niel sphere from the replicarnes, it has no real meaning. Even less meaning than LARPing the same thing, because any skills you refine, friendships you make, and so on, are all effectively imaginiary.
In contrast, reincarnating means that good you do in this life makes the world a better place, and in the next you can take part in that new good world.
Anyway, the world is such a strange place, and there is so much life in it, that reincarnation will take you to stranger places than one is likely to imagine in a very long time... from being an anthill to a antelope, an oak or a otter, or an underground fungal net or a tube worm or a cloud of plankton.
Who knows? Life is a complicated, hard-to-define thing. Perhaps one could become a trading algorithm or a meme. Probably not. Such things may be too simple to be "life", but possibly, they aren't.