I love Blender, especially Blender 2.8. It’s a huge leap forward in visuals, interface and usability. Back in 2012-2013 I was still using Maya, before I began my transition to Blender and it wasn’t easy because it’s really different control concept. Very shortcut based instead of navigating through pie menus. Also you are not playing around with the pivots as much as in Maya, because you can do a lot by just dragging the mouse (e.g. E for Extrude and then dragging mouse to extrude out and click to apply). But once you got into it, you will love it! For me Blender feels a lot faster and lightweight than Maya, but still not lacks of all important functions you need for creating your 3d models. Also the community is great with a lot of free and cheap addons in the Blendermarket.
Yes there are issues with FBX, particularly when exporting/importing skeletal fbx files, but there are working solutions to get the job done. I hope that other more open formats like glTF, which is also partly supported in UE4 now, will solve problems like that.