Reason -
I've played Minecraft since 2015.
I've played Roblox since 2014.
I've seen mind-blowing projects on both sides. Enjoyable game recreations in Roblox, from Payday to Battlefield and COD.
Extremely addictive gamemodes in Minecraft, too. The classics we, even if we don't play them, still remember. The Walls. Classic skyblock. etc, etc.
I grew up with these sandboxes - I'd much rather consider them both valid choices for some fun, than picking a side.