try the same link with "youtube.com" instead of "dztu.be"
Some people prefer solitude because relationships may bring problems and waste of time.
The question is should they stay alone all the time?
Do they end up being happy while lonely most of the time?
The study (75years long) says: No. As the speaker pointed out, relationships are often complex
still one should instead work on them and on relationships of quality, with family, wife, friends and
community.