How are we actually alive?

[lestatdark]

Yeah, both Gravity and electromagnetic forces are amongst the primary reasons as to why life as we know it can even exist. 

Even in the contrary situation, where both gravity and electromagnetic forces were below what's currently known and studied, that would prohibit some kind of molecular interactions that are vital for the formation of the more complex molecules (proteins, lipids and so on).

Wan der Walls forces would be non-existant, thus there wouldn't be any kind of dipole forces that could co-adhere weak electrostatic molecules next to each other. And since these kind of forces are also vital to the existence of the machinery that allows for DNA to be sustained and allows for it's replication, life wouldn't be able to exist in the current model that we know (DNA being the primal "building blocks" for every part of a cell, be it bacteria or Eukaryotic).

And also a high gravity, high electromagnetic forces would pose a serious problem for life as well, as the compaction of molecules due to the massively increase of heat and overall energy surrounding them would mean that any kind of molecule wouldn't be able to exist outside a gas form, ionized metal form or even plasmonic form, so molecules wouldn't be able to interact with one another to create complex molecules as well.

Both are interesting scenarios and interesting fields to study, if we had the know-how and possibility to do so.