They are fasting Ramadan reluctantly and they wish it would end, because of the hardship they face during it!
Question

                We are fasting Ramadan, but we wish that it would end, because of the hardship we face when fasting. Is this regarded as a sin from which we must repent? What is your advice to us?
Praise be to Allah.
      Fasting is one of the greatest acts of worship and one of 
      the best means of drawing close to Allah. Al-Bukhaari (1904) and Muslim 
      narrated that Abu Hurayrah (may Allah be pleased with him) said: The 
      Messenger of Allah (blessings and peace of Allah be upon him) said: “Allah 
      says: ‘Every deed of the son of Adam is for him, except fasting. It is for 
      Me and I shall reward for it. Fasting is a shield, so when it is a day 
      when one of you is fasting, let him not utter any obscene speech that day 
      or raise his voice. If anyone reviles him or tries to fight with him, let 
      him say: I am a man who is fasting. By the One in Whose hand is the soul 
      of Muhammad, the smell of the mouth of the fasting person will be better 
      before Allah on the Day of Resurrection than the fragrance of musk. The 
      fasting person has two moments of joy that he enjoys: when he breaks his 
      fast he rejoices, and when he meets his Lord he will rejoice because of 
      his fasting.’” 

    This clearly points to the great status and importance of 
    fasting in the religion of Allah, and to the virtue of those who fast and 
    the greatness of their reward. 

    Shaykh Ibn Sa‘di (may Allah have mercy on him) said: 

    These are two rewards, one in this world and one in the 
    Hereafter. 

    The reward in this world is seen when the fasting person 
    breaks his fast; he rejoices in the blessings that Allah has bestowed upon 
    him by enabling him to complete the fast, and he rejoices at fulfilling his 
    desires that he refrained from during the day. 

    The reward in the hereafter will be his joy when he meets his 
    Lord and He is pleased with him and honours him. This later joy is a 
    reflection of the earlier joy in this world, for Allah will grant both to 
    the fasting person. 

    It also indicates that when the time of breaking the fast 
    comes near, and the fasting person experiences this joy, it is in return for 
    what he has endured during the day of the hardship of forsaking his desires. 
    This comes under the heading of encouraging and motivating the individual to 
    do good. 

    End quote from Bahjat Quloob al-Abraar, 96. See also:
    Fath al-Baari by Ibn Hajar, 4/118 

    Hence you will find that the Muslim for whom fasting is 
    difficult but he is able to put up with it rejoices at the time of breaking 
    his fast, not because the difficulty has ended but because Allah may He be 
    exalted, has helped him to put up with it and complete the act of worship to 
    Him, may he be glorified. His focus was not on the hardship, waiting for 
    relief, rather his focus was on the act of worship and his determination to 
    complete it. According to the saheeh hadeeth narrated by Abu Hurayrah, the 
    Prophet (blessings and peace of Allah be upon him) said: “Would you like to 
    strive hard in du‘aa’ (supplication)? Say: Allahumma a‘inna ‘ala shukrika wa 
    dhikrika wa husni ‘ibaadatika (O Allah, help us to give thanks to You, to 
    remember You and to worship You properly).” Narrated by Ahmad, 7922; classed 
    as saheeh by al-Albaani in as-Saheehah, 844. 

    You can hardly find anyone who feels distressed during this 
    blessed month, except those who are more concerned about worldly matters so 
    that they may indulge in desires and pleasures, and do not like to keep away 
    from them. 

    The one who encounters hardship and tiredness because of 
    fasting is one of two types: 

    Either he has an excuse, such as sickness, travel and the 
    like, in which case he may avail himself of the concessions granted by Allah 
    and break the fast;

    or he encounters bearable hardship, so he completes his fast 
    and is patient in putting up with this hardship, seeking the pleasure of 
    Allah. 

    As for the one who encounters hardship and dislikes fasting, 
    and wishes that the month would end and never come again, this is 
    undoubtedly inappropriate; this is a person who dislikes worship and is not 
    patient in adhering to the commands of Allah. 

    For more information, please see the answer to question no.
    13480

    And Allah knows best.