After several losses in the Pacific, such as the loss of the Solomon Islands(Dec 1943) and the loss of the Battle of Leyte Gulf (Oct 1944), I think Japan realised that it was fighting a losing battle. Kamikaze literally means 'divine wind' and was seen as a very honourable death. The Japanese were very resilient and by the end of the war kamikaze bombers had sunk 34 US ships and damaged 288 more. Not a very good answer to your question but hope it helps.
Some are more desirable because every person has a personal preference that appeals to them and if it isn't appealing to them or if society likes one more, it would naturally draw the to it.
These engines were very useful to move machinery in mills, factories, pumping stations and transportationapplications. In the field of transport,steam engines were often used inlocomotives, ships and other land vehicles. Steam machines were of great importance in their application in the field of agriculture.
