I've been using Zone Alarm (Free Edition) for years.
I've never had a problem with it. It did what it was
supposed to do and that's all I ask of any Programme.
Then...then...they couldn't leave well enough alone
and decided in their infinite wisdom to turn it into
bloatware. I loathe, hate and despise bloatware of
any kind!

Well, two months ago, having read everything there
was to read about COMODO's Personal Firewall, I
got rid of ZONE ALARM and went with Comodo and
used it for about three months.
There are things I like about it and things I came
to hate about it. The things I hate about it outweigh
the things I like about it. So I have returned to Zone
Alarm Free Edition.
For one thing, Comodo is always in a "Learning" mode.
I should think that after three months, it ought to be
finished "Learning" and get down to "We got it!"
I don't always know what's going on behind the scene
in most of these programmes, but my preference is to
"set it and forget it". Let it do it's thing. Otherwise,
I get very antsy when I have to check and double
check and triple check if I've got a programme such,
as an Anti-virus checker or a Firewall, is as secure as
it claims to be.
I want my Firewall and Anti-virus Programmes to be
simple, uncluttered, easy to understand when I'm looking
at it without having to play IT Pro.
No matter how many years I've been using a P.C. I'm
never more than a NOVICE. Period.
I've been using computers since 1978 when I was
in DOS. Yet, I still call myself a NOVICE when it comes
to software.