Avast 'Pro'
Comodo
Malwarebytes

This combined package affords excellent 'protection'.
Only proviso is that if you try to use the 'Pro' (proactive blocking as opposed to reactive removal) version of Malwarebytes in conjunction with Comodo you may have problems.

If one does not run 'protective' software than one is an enemy of other users as you cannot avoid retransmitting bad stuff to all others with whom you may connect or who may subsequently download your infected material.
Irresponsible and impolite to run naked, eh?
And, I don't mean wang dangle naked!

Does this thread merit an award for off-topicness?