when we pray

I never (or rarely) used to say the Lord's prayer/ the 'Our Father...' because it always seemed to me that it's better to pray in my own words. I associated repeating certain words from memory with religiosity and not real spirituality. 

BUT....I was thinking about it, and this prayer was Jesus's answer to the disciples' question, 'how should we pray?', so how can I say that it's not how I should pray when Jesus himself said, 'pray like this'.

So lately I've been saying the Lord's prayer as part of my regular prayer. 

Something that struck me is the communal nature of the prayer. It's Our Father.....Our daily bread....Our trespasses.....We forgive....lead us....deliver Us. Some of the words, I change when I say it. Like, the traditional - 'Our Father who art in heaven, hallowed be thy name....', when I say it I modernize it - 'Father in heaven, hallowed be your name...'. So I was thinking, if I'm praying it on my own, should I change all the 'our's to 'my', and 'we' to 'I' and 'us' to 'me' to make it my prayer? 

The answer comes back to my initial point, that this is how Jesus tells us to pray. He said that when we pray, it should be 'our' and 'we' and 'us', so that's how we pray.