One needs to consider the following when choosing to play with H3.
1. The rubber feels dead when not boosted. We know the pros boost them, and if they need to boost, definitely you will need to boost to unleash its strength. Do you want to deal with the hassle of boosting from time to time? We are talking about every few weeks if you go with the best boosters (Kailin, Dianchi). If you use FTL, it'll last a few months but the effect may not be the best. Do you even live in an area that you can easily source Chinese boosters? I'd say every 2000+ rated players I've met locally using H3 boosts religiously. Some still use speed glue a day before the tournament.
2. Are you prepared to deal with the changing characteristics of the rubber as your booster wears off?
3. Do you have the physique and technique to use H3? If you did not have a solid training when you were young (teenage years), I'd say it'll be very difficult for you to master a good footwork and weight transfer required for H3. Also, depending on your age, it simply makes no sense to switch to H3 and re-learn your stroke.
A lot of the benefits have already been mentioned so I won't repeat, but you need to know that these benefits don't automatically come when you switch to H3. They require a lot of hard work and for most people who didn't grow up training with H3, Euro/Jap rubbers will your best bet. At your level, you can generate even more spin and speed with these rubbers. Don't get carried away by CNT dominating the world using H3. They practice easily 2-3x than any other professionals.