Yes I follow RAs
If I/We get an RA then we have come to the last line of defense.
For whatever reasion Crew ATC or both.
If the aircraft involved are given RAs then the TCAS has already resolved the breakdown in seperation.
It is our company SOP to do so.
I have had 1 RA because of another A/c Decending form above
at a high rate of decent.While in the cruise.
We did not even see the other aircraft but watched on TCAS from when it became a TA .
I have also had a nother heavy A/C not show on TCAS at all
The following investigation found the 747 had a us TCAS
and yes I did raise ASRs about both of those incedents
I work for a UK company, Flying mostly in the UK.
I hope this helps in sheding some light on what we see at our end