The game keeps me active, and is fun to play alone, or with someone else!
**However, the modifications to the gym have been mixed for me. Then new gyms only allow 6 people on, and dont give any bonuses for staying on for a long period of time (beyond 50 coins). Also, the battle function is too slow stopping after each Pokémon, and way too easy. The Pokémon on gyms lose CP quickly just by sitting. Gyms are supposed to be challenging, and something you train and level up to be good for. The new gyms seem watered down...
music is nice about Pokémon GO, v1.39.1