Why is mtDNA less interesting to study than Y DNA

[Illyrius]

I don't know but looking up mtDNA origins and stuff like that is pretty boring to me?
Finding out about y dna is so much more exciting

[Ranger0075]

[Illyrius]

No.
We both have mtDNA so

[Luso]

I think there is way more data on y-dna.

[Rethel]

I don't know but looking up mtDNA origins and stuff like that is pretty boring to me?
Finding out about y dna is so much more exciting

You have just answered your own question.
Why is it? Becasue Y has practical apply, mt hasn't.

[mitalit]

The paternal last name tends to be more important too

[Hamilcar]

The paternal last name tends to be more important too

in Spain they have both name no ?

[mitalit]

in Spain they have both name no ?

Yes, but the maternal surname is lost in the second generation.

[Immanenz]

The question is would yDNA be even interesting if PIE expansion would not happen.
The answer for it are cultural reason, but for the majority of people it is not even interesting.

[Rethel]

in Spain they have both name no ?

Name is just name, can be, can be not. Before names were, the family and rules were the same.
And this is important. When someone pay attantion only to name or hg, it means, that does not
understand what is talking about, and is missing the point. Name only descrbies the something.

The question is would yDNA be even interesting if PIE expansion would not happen.

Yes. What has the expantion of Indoeuropeans to do with it?