indulge (someone's) desires

Translations
удовлетворять (чьи-то) желания
He decided to indulge his desires and buy the sports car.
Он решил удовлетворить свои желания и купить спортивную машину.
Definitions
To satisfy or fulfill someone's wishes, wants, or cravings, often by allowing them to engage in activities or obtain things they enjoy.