[DIYbio] gel electrophoresis vs liquid chromatography?

I am lurking here for a while since I have a very tangential experience with bio. My phd is in nano but biohacking looks very interesting and promising. Anyway I was hoping that the community can help me with some questions.

For example, I am confused why is gel electrophoresis so popular compared to liquid choromatography. One constantly needs to buy agarose and visually label dna (have a UV imager) while the same column would work for a long time. We can also co-pass a already known strands with some fluoro or other label that can be detected at wavelength other than 260 nm (this would serve as a ladder in electrophoresis).  Also its more difficult to collect DNA later in gel compared to HPLC. Liquid chromatography can be used to detect other things as well (not just charged DNA) so it's even more useful for DIY people. 

What bothers me is the constant need of supply chain for doing DIYbio compared to computer revolution. I would love to simplify detection (at least) to have minimum of consumables possible. Any ideas?
 

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