The Mobilio hasn't been on the market too long to have enough credible feedback on its CVT reliability. Previous CVT generations have been problematic, but that may have stemmed from the fact that when they came out locally, the wrong fluid was was being used. It's only the past 8-10 years that Honda came out with a proper CVT fluid. Not 100% sure on this though.
But for one, CVT offers the best fuel economy, rivaling M/T. In other words, it's the best of both worlds; Convenience of an A/T with the fuel economy and efficiency of an M/T.