Is it acceptable to use personal experience when opening in presentation of my thesis? Is it acceptable to use personal experience when opening in presentation of my thesis as long as it is relevant and contribute to the presentation of the literature, justification or methodology of thesis?

I do not intend to reference or cite any of my experiences as a source, but rather, I am seeking to use my experiences to begin with the research story.

For instance,

"...I experienced event X and I observed event Y, which may potentially be manifestations of the phenomenon described in the thesis theory, with event A being a possible example of B and event C being an example of D.".

Something to this extent.

I've witnessed various thesis defenses and seen many presentations on Youtube. They gave me an idea of adding a "personal touch" to the presentation.

Please note that I'm referring to my thesis defense rather than the thesis itself which focuses strictly on the hypothesis, methodology and findings in third persons. 

English is not my mother tongue. Please forgive any misspelling and inconsistencies.

Thank you.
I would say that it could be acceptable. It really depends on the context. If you are using it to explain why you became interested in the topic of your thesis, then it could add to the context and depth of the thesis. However, if you use it to support your thesis, I think you should avoid it. It will weaken your argument and could be off putting to your committee.