can you tell me three points of disadvantages of travel

1. Need lots of money
Besides the cost of air tickets (or sea tickets), travelers 旅客 need to spend a lot of money on hostels 旅舍 and hotels, meals, souvenirs 紀念品 and transportations.

2. Lots of danger during the journey 旅程
There are lots of accidents related to travelling in foreign countries, for example, traffic accidents on the high ways, robberies 搶劫案, hoax / deceites 騙局 in particular to travellers.

3. Easy catching up unknown foreign diseases 疾病
There are many common travelers' disease that travelers are prone 易於 to catch in their journey because they usually do not have the firsthand 第一手的 information on breakouts 爆發 of local diseases. For example, Dengue Fever 登革熱, cholera霍亂 and diarrhoea 腹瀉. Many of these diseases are found in South-east Asia countries, where the level of hygiene 衛生 is not very high and travelers may intake unclean 不潔的 food and drinks on local restaurants.

1) Spent a lot of money
2) need energy to travel
3) homesick

1$$$ 2$$$ 3$$$