Mommies, who have strollers, can you tell me if you used such a stroll…

Mommies, who have strollers, can you tell me if you used such a stroller? Is it needed? My children are 1.4 months apart. We reach the park with the older child in the stroller, and the younger one in a kangaroo, then on the playground we put the younger one in the stroller. But the older one still gets tired and asks for the stroller after some time. Husband says that the older one will grow up soon and won't sit in the stroller, although I see many children sitting until 3.4 years old?! What would you recommend or is this a waste of money? We live in another city alone, not going out on weekends is not an option, not going out at all is