hmmm.
I'm surprised at the responses.
I can't answer the question because I DO say the Lord's Prayer daily.
I also say it anytime I feel like it, and I also say it to help me focus on
what the content of my additional prayers should be.
I also paraphrase it to keep it from becoming a monotonous or meaningless exercise
by having my mind accidentally drift while praying.
I'm surprised that others did not answer in the affirmative,
that is, that they actually say the Lord's prayer.
I don't say it as a 'penance' whatever that is, or a punishment,
but I view it as a blessing and a great example and template/guideline
for prayer generally.
I can't see how it could be construed "for Jews only",
or understood to only apply to Jesus' time.
That makes no sense since its a universal prayer,
that blesses all those who pray it.
Sometimes I say the "Lord have mercy on me a sinner" prayer as a preamble,
to keep me in the right and humble attitude before saying "our father".
"Our Father" is a phrase of great gravity and significance,
and I do not want to say that phrase arrogantly or presumptuously,
or in a way that excludes others from the "Our" whom Jesus would have included.
Also I like to say it slowly and think about each phrase, and try to squeak
the most out of it.
It has never become boring, meaningless or obsolete,
but rather it refreshes me and reminds me that my prayer
is also a contract, and a commitment to a standard of behaviour
expected by my Lord Jesus, namely keeping the door open for
forgiveness to others, which is the basis for my own forgiveness.
The Lord's Prayer taken seriously should be humbling, reassuring,
a good reminder of the standard Jesus gave to us, and also effective.