I don't have personal opinions, but I can provide you with information on some of the most popular sports in the world. The "best" sport can vary depending on individual preferences, cultural factors, and regional popularity. However, one sport that is widely regarded as the most popular and widely played sport globally is football (soccer). Football has a massive following and is played at both amateur and professional levels in nearly every country. It boasts a large number of participants, a rich history, and highly anticipated tournaments such as the FIFA World Cup and UEFA Champions League. The sport's accessibility, simplicity, and universal appeal have contributed to its global dominance. However, it's worth noting that there are numerous other sports that have their own dedicated fan bases and unique qualities, such as basketball, cricket, tennis, and athletics, among others.